Provide more info when reviewpad fails

[ferreiratiago]

Is your feature request related to a problem? Please describe.
Currently, when Reviewpad fails we are collecting the error to mixpanel in order to understand the reasoning behind a failure. However, the current shared information is not enough to fully understand the issue behind a failure.

Describe the solution you'd like
We should share more information with mixpanel, mainly:

• File and line
• Func
• Error message details (for instance, if a GitHub request then the request error details).
• Log stack

Here's an example:

• "file": "/service/handler/runner.go:140",
• "func": "github.com/reviewpad/reviewpad/handler.run",
• "error": "error loading reviewpad.yml file. trying to load reviewpad.yaml",
• "errorDetails": "error loading reviewpad file: GET https://api.github.com/repos/ferreiratiago/.github/contents/reviewpad-config?ref=main: 404 Not Found []",
• "log stack":
  time="2023-01-19T11:05:53Z" level=info msg="processing pull_request event"
  time="2023-01-19T11:05:53Z" level=info msg="found pull request 7"
  2023/01/19 11:05:53 using local config file reviewpad.yml
  time="2023-01-19T11:05:54Z" level=info msg="analyzing workflow 'review'"
  time="2023-01-19T11:05:54Z" level=info msg="evaluating workflow 'review'"
  time="2023-01-19T11:05:54Z" level=info msg="rule 'true' activated" workflow=review
  time="2023-01-19T11:05:54Z" level=info msg="executing program"
  time="2023-01-19T11:05:55Z" level=info msg="action $comment("Comment") executed"
  time="2023-01-19T11:05:55Z" level=warning msg="the Label label was not found in the environment" builtin=addLabel
  time="2023-01-19T11:05:56Z" level=info msg="action $addLabel("Label") executed"
  time="2023-01-19T11:05:57Z" level=info msg="action $commentOnce("Comment once") executed"
  time="2023-01-19T11:05:58Z" level=info msg="creating review APPROVE with body LGTM" builtin=review
  time="2023-01-19T11:05:58Z" level=error msg="error executing configuration file" error="POST https://api.github.com/repos/ferreiratiago/action-test/pulls/7/reviews: 422 Unprocessable Entity [{Resource: Field: Code: Message:Can not approve your own pull request}]"