feat(mail): add mailer and various gui fixes

add(doc): add documentation and settings file

(Vote) Voting restriction added

(firebase DS changed) :

loader and net connection feedback added

feature(scheduler): add scheduler in mailer

ophio-temp images added | user feedback modified

link added

Update README.md

Update README.md

fix(import): add import os in run.py

gui-fixing: new logo added

feat(mail): add mailer and various gui fixes

unused images removed | mail logo added

mail-assets added

mail-assets added

mail specs modified

(env var addded): environment variable set