feat(pre-commit): Add commit message linting

Signed-off-by: Lorenzo Vagliano

.gitlint

@@ -0,0 +1,12 @@
+[general]
+ignore=body-is-missing
+extra-path=./scripts/gitlint_rules/
+debug=true
+verbosity=3
+contrib = contrib-body-requires-signed-off-by, contrib-title-conventional-commits
+
+[title-max-length]
+line-length=50
+
+[body-max-line-length]
+line-length=72

.pre-commit-config.yaml

@@ -32,6 +32,15 @@ repos:
         args: ["--config=setup.cfg"]
         additional_dependencies: [flake8-isort]
 
+  - repo: https://github.com/jorisroovers/gitlint
+    rev: "v0.17.0"
+    hooks:
+      - id: gitlint
+        language: python
+        entry: gitlint
+        stages: [commit-msg]
+        args: [--msg-filename]
+
 # sets up .pre-commit-ci.yaml to ensure pre-commit dependencies stay up to date
 ci:
   autoupdate_schedule: weekly

scripts/gitlint_rules/rules.py

@@ -0,0 +1,41 @@
+# import re
+
+# from gitlint.rules import CommitRule, RuleViolation
+
+# EXAMPLE GITLINT CONFIGURATION
+
+# class SignedOffBy(CommitRule):
+#     """This rule will enforce that each commit contains a "Signed-off-by" line."""
+
+#     name = "body-requires-signed-off-by"
+#     id = "Workflows1"
+
+#     def validate(self, commit):
+#         for line in commit.message.body:
+#             if line.startswith("Signed-off-by"):
+#                 return
+
+#         msg = "Body does not contain a 'Signed-Off-By' line"
+#         return [RuleViolation(self.id, msg, line_nr=1)]
+
+
+# class ApprovedSubject(CommitRule):
+#     """Validate subject of each commit.
+
+#     This rule will enforce that each commit starts with a "module: text" format.
+#     The 'module' can be any alphanumeric word, and the message must start with a colon followed by a space.
+#     """
+
+#     name = "approved-subject-in-title"
+#     id = "Workflows2"
+
+#     MODULE_PATTERN = re.compile(r"^[a-zA-Z0-9_-]+: .+")
+
+#     def validate(self, commit):
+#         title = commit.message.title
+
+#         if not self.MODULE_PATTERN.match(title):
+#             msg = "Subject does not follow 'module: text' format"
+#             return [RuleViolation(self.id, msg, line_nr=1)]
+
+#         return