mqtt-insight: Add version 1.2.0

[zzfnohell]

Closes #18482

• Use conventional PR title: <manifest-name[@version]|chore>: <general summary of the pull request>
• I have read the Contributing Guide

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a Scoop manifest for MQTT Insight 1.2.0. The manifest defines the Windows download URL and SHA256 hash, extraction directory, shortcut, persistent directories, GitHub version checking, and version-aware autoupdate URL.

Estimated code review effort: 2 (Simple) | ~10 minutes

Possibly related PRs

• ScoopInstaller/Extras#18307: Adds a similar Scoop manifest for a versioned Windows GitHub release.
• ScoopInstaller/Extras#18344: Adds a Windows application manifest with hashes, shortcuts, and GitHub autoupdate settings.
• ScoopInstaller/Extras#18425: Adds a Windows application manifest with persistence and versioned GitHub downloads.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	The manifest adds MqttInsight 1.2.0 with the requested Windows download and Scoop installation details.
Out of Scope Changes check	✅ Passed	The changes are limited to the requested MqttInsight manifest and related configuration.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Title check	✅ Passed	The title follows the conventional format and clearly identifies the manifest and version being added.
Description check	✅ Passed	The description links the issue and confirms both required checklist items, with the change scope clear from the title and context.

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[zzfnohell]

/verify

[github-actions]

All changes look good.

Wait for review from human collaborators.

mqtt-insight

• Lint
• Description
• License
• Hashes
• Checkver
• Autoupdate

Check the full log for details.

[z-Fng]

It appears that this package doesn't fully meet the essential criteria. Please feel free to reopen this PR once it fully meets the criteria, or consider creating your own bucket instead.

For a package to be acceptable in this bucket, it should be:

1. Reasonably well-known and widely used. e.g. if it's a GitHub project, it should have at least 100 stars and/or 50 forks *
2. English interface (or at least English documentation) *
3. Latest stable version *
4. Full version (i.e. not a trial version)
5. Fairly standard install (e.g. uses a version-specific download URL, no elaborate pre/post install scripts)