Reorganize repository structure.

[boki1]

Organize directories by their contents

e.g.

repo root
|-----src
       |----bot
             |----_algorithm implementation_
       |----website
             |----_website_
       |----client
             |----_microphone, ..._
       |----_other platforms (discord/viber/... integration)_
|-----misc
|-----run.sh
|-----README.md
|-----.gitignore