chore(git): Add a commit template & introduce new guidelines (#1044)

* chore(git): Add a commit template & introduce new guidelines

Introduce new guidelines for commit titles and descriptions:
- More useful and unique commit titles
- Useful descriptions
- Maybe the use of automated changelogs in the future (see link)

https://www.conventionalcommits.org/en/v1.0.0-beta.2/

* chore(git): Improve title examples

* Update .git_commit_template.txt

apps/git_tools/setup_git_commit_template.sh

@@ -0,0 +1,4 @@
+#!/usr/bin/env bash
+
+## Set a local git commit template
+git config --local commit.template ".git_commit_template.txt" ;