Setup the repo and implement 8 OTX rules

[hoangtungdinh]

Description

This PR setups the repository structure and implements 8 OTX rules.

Main changes

1. Setup the repository
   • Add repo structure and first rule implemented #1
   • Add github workflow #2
2. Implement 8 OTX rules
   • Add package uniqueness check #3
   • Add unused import check #4
   • Add no dead import check #5
   • Add specification realisation check #6
   • Add main and constant check and tests #7
   • Add unique name in procedure check #8

How was the PR tested?

1. Tests are documented in each PR above.