gbot

[4meta5]

124

[4meta5]

• [x] add milestone submission reference to bounty module (event emission)
• [x] update MilestoneSubmittedEvent in client/client
• [x] finish run_github_bot method in bot/main.rs

[4meta5]

• [ ] improve cli usability (add better print statements and more documentation for forming commands)

[4meta5]

final TODOs will be done in a future PR