Email templates

[TorrentofShame]

Updates and adds templates as provided by @APherwani, updates and adds helper functions as applicable. Adds static files, (temporary solution, should have static assets hosted on a CDN in the future)

• resolves: #47
• resolves: #48

Checklist:

• [x] Add or update the relevant docs.
• [x] Add an entry in CHANGELOG.md summarizing the change.
• [x] Run tests, with no tests failed.

[github-actions[bot]]

File	Coverage
All files	73%	:x:
src/__init__.py	94%	:white_check_mark:
src/api/__init__.py	85%	:white_check_mark:
src/api/auth.py	43%	:x:
src/api/club_events.py	66%	:x:
src/api/email_verification.py	35%	:x:
src/api/hackers.py	56%	:x:
src/common/decorators.py	87%	:white_check_mark:
src/common/init_defaults.py	56%	:x:
src/common/json.py	77%	:white_check_mark:
src/common/jwt.py	73%	:x:
src/common/mail.py	42%	:x:
src/models/hacker.py	94%	:white_check_mark:
src/models/sponsor.py	64%	:x:
src/models/user.py	88%	:white_check_mark:
src/tasks/__init__.py	78%	:white_check_mark:
src/tasks/clubevent_tasks.py	19%	:x:
src/tasks/mail_tasks.py	45%	:x:

Minimum allowed coverage is 75%

Generated by :monkey: cobertura-action against 7a939b66a33e8701cc9bbd3497656a971d18824e

[APherwani]

One more thing, can you send me an email from both templates as an additional sanity check. You have my email.

[TorrentofShame]

One more thing, can you send me an email from both templates as an additional sanity check. You have my email.

I can; however, the static assets will not render as that required the backend to be updated with this pr.

[APherwani]

Alright just do that after you deploy. Thanks!