feat: add ability to ask Homie to write code by commenting on Github Issue

[homie-gg[bot]]

Here are some pull requests that might be helpful reference for this task:

• feat: code-gen. Ability for Homie to write code, and open PR with fixes

[homie-gg[bot]]

This might have already been done via: feat(Github): work on issue via comment.

[homie-dev-mike[bot]]

This might have already been done via: feat(Github): work on issue via comment.

[homie-dev-mike[bot]]

Here are some pull requests that might be helpful reference for this task:

• feat(Github): work on issue via comment
• fix(Billing): update plan cards to use new plans
• fix(CodeGen): reply with static processing message