[FEATURE] - Cheater command + spoiler improvement

[janssensjelle]

New command /cheater to allow users to report cheaters on the main platform.
We also add a new field 'desc' to the spoiler command and made the url field required.

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply.

• Bugfix (non-breaking change which fixes an issue).
• New feature (non-breaking change which adds functionality).
• Breaking change (fix or feature that would cause existing functionality not to work as expected).
• Documentation Update (if none of the other choices applies).

Proposed changes

• Added a /cheater command to report cheaters on main platform with a cooldown.
• Added a helper for call to use with spoiler and cheater to the webhook
• Modified .test.env ("JIRA_SPOILER_WEBHOOK” to “JIRA_WEBHOOK”)
• Added tests for /cheater
• Modified tests for spoiler
• Added description to /spoiler ([FEATURE] Added description field to spoiler and made the url field required #134)

Checklist

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• I have read and followed the CONTRIBUTING.md
  doc.
• Lint and unit tests pass locally with my changes.
• I have added the necessary documentation (if appropriate).

Additional context

[ToxicBiohazard]

@dimoschi We'll be reusing the existing Jira webhook URL but the name of the variable changes now JIRA_WEBHOOK.

[ToxicBiohazard]

Looks good. We must ensure to update the env name to JIRA_WEBHOOK on the CI/CD

[dimoschi]

LGTM. Minor issue that this PR does more than one thing, improving the cheater/spoiler feature and adding a new Academy Role.

[janssensjelle]

LGTM. Minor issue that this PR does more than one thing, improving the cheater/spoiler feature and adding a new Academy Role.

You're right - small issue in the .test.env - but this should already be added as we merged it in #132