[Build System] Add support to log build times for each products

[shahmishal]

Summary at the end of the build:

--- Build Script Analyzer ---
Build Script Log: /Users/mishal_shah/src/github/build/.build_script_log
Build Percentage 	 Build Duration (sec) 	 Build Phase
================ 	 ==================== 	 ===========
25.0%             	 4631.79               	 macosx-x86_64-swift-build
21.7%             	 4028.52               	 macosx-x86_64-swift-test
5.9%              	 1100.72               	 Running tests for swiftpm
4.9%              	 905.14                	 Building swiftpm
4.3%              	 800.66                	 Running tests for swiftdocc
3.9%              	 730.45                	 Running tests for swiftdriver
3.6%              	 674.62                	 macosx-x86_64-lldb-test
3.1%              	 572.32                	 Running tests for sourcekitlsp
2.7%              	 501.62                	 Installing swiftpm
2.7%              	 500.93                	 Building sourcekitlsp
2.6%              	 488.29                	 Running tests for swiftsyntax
2.5%              	 472.4                 	 Building skstresstester
2.4%              	 442.2                 	 Running tests for skstresstester
2.2%              	 413.81                	 Building swiftsyntax
2.2%              	 405.71                	 Building swiftdocc
2.2%              	 400.06                	 Running tests for swiftevolve
2.1%              	 395.0                 	 Installing swiftdocc
2.1%              	 389.47                	 Building swiftevolve
1.2%              	 223.52                	 Building swiftdriver
0.6%              	 111.82                	 macosx-x86_64-lldb-build
0.5%              	 99.83                 	 Running tests for indexstoredb
0.5%              	 93.47                 	 Building indexstoredb
0.2%              	 44.09                 	 macosx-x86_64-llbuild-build
0.2%              	 28.18                 	 macosx-x86_64-llvm-build
0.1%              	 27.2                  	 macosx-x86_64-llbuild-test
0.1%              	 26.05                 	 Building earlyswiftdriver
0.1%              	 17.15                 	 macosx-x86_64-swift-install
0.0%              	 5.03                  	 Building cmark
0.0%              	 4.7                   	 macosx-x86_64-llvm-install
0.0%              	 3.38                  	 Installing swiftdriver
0.0%              	 2.7                   	 Building playgroundsupport
0.0%              	 2.07                  	 Cleaning swiftpm
0.0%              	 2.07                  	 Cleaning swiftdriver
0.0%              	 1.05                  	 macosx-x86_64-libcxx-build
0.0%              	 0.41                  	 macosx-x86_64-libcxx-install
0.0%              	 0.28                  	 macosx-x86_64-llbuild-install
0.0%              	 0.17                  	 macosx-x86_64-llvm-test
0.0%              	 0.17                  	 macosx-x86_64-libcxx-test
0.0%              	 0.15                  	 macosx-x86_64-lldb-install
0.0%              	 0.1                   	 macosx-x86_64-extractsymbols
0.0%              	 0.09                  	 merged-hosts-lipo-core
0.0%              	 0.09                  	 macosx-x86_64-package
0.0%              	 0.09                  	 merged-hosts-lipo
0.0%              	 0.02                  	 Installing swiftdoccrender
Total Duration: 18547.59

.build_script_log file:

{"duration": "0.00", "command": "Building earlyswiftdriver", "event": "start"}
{"duration": "26.05", "command": "Building earlyswiftdriver", "event": "end"}
{"duration": "0.00", "command": "Building cmark", "event": "start"}
{"duration": "5.03", "command": "Building cmark", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-llvm-build", "event": "start"}
{"duration": "28.18", "command": "macosx-x86_64-llvm-build", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-libcxx-build", "event": "start"}
{"duration": "1.05", "command": "macosx-x86_64-libcxx-build", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-swift-build", "event": "start"}
{"duration": "4631.79", "command": "macosx-x86_64-swift-build", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-lldb-build", "event": "start"}
{"duration": "111.82", "command": "macosx-x86_64-lldb-build", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-llvm-test", "event": "start"}
{"duration": "0.17", "command": "macosx-x86_64-llvm-test", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-libcxx-test", "event": "start"}
{"duration": "0.17", "command": "macosx-x86_64-libcxx-test", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-swift-test", "event": "start"}
{"duration": "4028.52", "command": "macosx-x86_64-swift-test", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-lldb-test", "event": "start"}
{"duration": "674.62", "command": "macosx-x86_64-lldb-test", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-llvm-install", "event": "start"}
{"duration": "4.70", "command": "macosx-x86_64-llvm-install", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-libcxx-install", "event": "start"}
{"duration": "0.41", "command": "macosx-x86_64-libcxx-install", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-swift-install", "event": "start"}
{"duration": "17.15", "command": "macosx-x86_64-swift-install", "event": "end"}
{"duration": "0.00", "command": "macosx-x86_64-lldb-install", "event": "start"}
{"duration": "0.15", "command": "macosx-x86_64-lldb-install", "event": "end"}
...

[shahmishal]

@swift-ci test

[shahmishal]

@swift-ci test

[shahmishal]

@swift-ci python lint

[shahmishal]

@swift-ci test macOS

[shahmishal]

@swift-ci test macOS

[shahmishal]

preset=stdlib_S_standalone_minimal_macho_x86_64,build,test
@swift-ci please test with toolchain and preset

[shahmishal]

@swift-ci test

[shahmishal]

@swift-ci test