Add precommit hook (soxoj#664)

* add Sherlock sites
* add precommit hook

Author: fen0s

.githooks/pre-commit

@@ -0,0 +1,2 @@
+#!/bin/sh
+python3 ./utils/update_site_data.py

README.md

@@ -103,6 +103,11 @@ maigret user1 user2 user3 -a
 
 Use `maigret --help` to get full options description. Also options [are documented](https://maigret.readthedocs.io/en/latest/command-line-options.html).
 
+## Contributing
+
+Maigret has open-source code, so you may contribute your own sites by adding them to `data.json` file, or bring changes to it's code!
+If you want to contribute, don't forget to activate statistics update hook, command for it would look like this: `git config --local core.hooksPath .githooks/`
+You should make your git commits from your maigret git repo folder, or else the hook wouldn't find the statistics update script.
 
 ## Demo with page parsing and recursive username search
 

maigret/resources/data.json

@@ -33752,6 +33752,27 @@
                 "webcam"
             ]
         },
+        "Harvard Scholar": {
+            "checkType": "status_code",
+            "url": "https://scholar.harvard.edu/{username}",
+            "urlMain": "https://scholar.harvard.edu/",
+            "usernameClaimed":   "ousmanekane",
+            "usernameUnclaimed": "noonewouldeverusethis7"
+          },
+          "Google Scholar": {
+            "checkType": "status_code",
+            "url": "https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q={username}&btnG=",
+            "urlMain": "https://scholar.google.com/",
+            "usernameClaimed": "Blue",
+            "usernameUnclaimed": "noonewouldeverusethis7"
+          },
+          "HuggingFace": {
+            "checkType": "status_code",
+            "url": "https://huggingface.co/{username}",
+            "urlMain": "https://huggingface.co/",
+            "usernameClaimed": "blue",
+            "usernameUnclaimed": "noonewouldeverusethis7"
+          },
         "dlive.tv": {
             "absenceStrs": [
                 "Channel not found"
@@ -33771,6 +33792,13 @@
                 "streaming"
             ]
         },
+        "ManifoldMarkets": {
+            "checkType": "status_code",
+            "url": "https://manifold.markets/{username}",
+            "urlMain": "https://manifold.markets/",
+            "usernameClaimed": "ManifoldMarkets",
+            "usernameUnclaimed": "noonewouldeverusethis7"
+          },
         "instaprofi.ru": {
             "absenceStrs": [
                 "/static/img/pages/profile/nobody.jpg"