Add go.mod files

Author: rsora

go.mod

@@ -0,0 +1,11 @@
+module github.com/arduino/arduino-check
+
+go 1.14
+
+require (
+	github.com/arduino/arduino-cli v0.0.0-20200922073731-53e3230c4f71
+	github.com/arduino/go-paths-helper v1.3.2
+	github.com/arduino/go-properties-orderedmap v1.4.0
+	github.com/sirupsen/logrus v1.6.0
+	github.com/xeipuuv/gojsonschema v1.2.0
+)