Pull request alert types

[eleftherias]

User Story Description

As a Minder rule author
I want to write a rule that comments on a pull request if there is an evaluation failure
so that I can alert the PR author in the environment they are already using

Background

We already have existing ruletypes that comment on pull requests (e.g trusty and OSV), but there is nothing in the ruletype definition that explicitly states that commenting will be the action taken if the PR is not compliant.

Furthermore, the logic to comment on a PR is internal to Minder and not available to be reused by external authors of new ruletypes.

Acceptance Criteria

• Given that I'm a Minder user
  and I've written a rule with the alert type pull_request_comment
  and the rule is part of a profile on my project
  when the rule evaluation fails
  then Minder comments on my pull request
• Given I have a rule in a profile with the alert type pull_request_comment
  and I've defined the summary in my alert as "This PR has issues"
  then Minder comments on my pull request with the message "This PR has issues"
• Given I have a rule in a profile with the alert type pull_request_comment
  and I've defined the line_comments in my alert as follows

  line_comments: 
       - lineStart: 110
         lineEnd: 110
         comment: This dependency needs to be updated
       - lineStart: 120
         lineEnd: 130
         comment: These lines of code need to be updated
  

  then Minder comments on line 110 with the message "This dependency needs to be updated"
  and Minder comments on lines 120 to 130 with the message "These lines of code need to be updated"

Additional Resources

No response

Tasks

• (spike) Investigate options for passing evaluation output to alert #5054