Add pre commit hook

[Lee-W]

Since the last commit of this pr make a huge amount of style change, I would recommend skipping that commit and reviewing the commit before it.

feat

• add commitizen pre-commit hook
• add isort into reformat and rename original black task as black_check
• add setup-pre-commit-hook task

[Lee-W]

We'll know whether auto versioning will work this time!

[Lee-W]

I do change the black configuration to 88 which is its default config. But the import order is unified by isort.

[Lee-W]

https://github.com/pycontw/pycontw-postevent-report-generator/actions/runs/51221703

It works!

[tai271828]

hooray!! looks like pre-commit hook works.