[ACTION] Expand FrontApp coverage

[darcher12]

Is there a specific app this action is for? https://pipedream.com/apps/frontapp

Please provide a link to the relevant API docs for the specific service / operation.

Comments API: https://dev.frontapp.com/reference/comments

Support for: Get Comment, Add Comment

Drafts API: https://dev.frontapp.com/reference/drafts

Support for: Create draft, Create Draft reply

Conversations: https://dev.frontapp.com/reference/conversations

Support for: List Conversations, Assign Conversations, Archive Conversations, Tag Conversations

Teammates: https://dev.frontapp.com/reference/teammates

Support for: List teammates, Get teammate

[vunguyenhung]

Hello everyone, I have tested this PR and there're some test cases failed or needed improvement.

Please check the test report below for more information
https://vunguyenhung.notion.site/ACTION-Expand-FrontApp-coverage-1d2bf548bb5e81c983fac7f2a6462b3f