Add CI job to enforce conventional commits

[fujiapple852]

Add a CI job to enforce conventional commits.

• Add a new job conventional-commits to .github/workflows/ci.yml to enforce conventional commits using webiny/action-conventional-commits@v1.
• Configure the job to run on every pull requests to the master branch.
• Define the conventional commit types: feat, fix, chore, docs, style, refactor, test, build, and ci.

[c-git]

This is interesting. I have a small commit-msg hook that I wrote when I started trying to get accustomed to it. Copied below for reference:

#!/bin/sh

regex="^(feat|fix|build|chore|ci|docs|style|refactor|perf|test|revert)(\[.+\])?: .+"

grep -E "$regex" "$1"
if [ $? != 0 ]
then
    echo "[error] Commit message doesn't appear to in the conventional commit format"
    echo "[info] expecting \"<type>[optional scope]: <description>\""
    echo "[info] see https://www.conventionalcommits.org/en/v1.0.0/#summary for more info"
    echo "[debug] using regex: \"$regex\""
    echo "[debug] on commit message:"
    cat "$1"
    exit 1
fi