chore: specify platform support in the pubspec

[dkrutskikh]

What is the purpose of this pull request? (put an "X" next to an item)

• Documentation update
• Bug fix
• New rule
• Changes an existing rule
• Add autofixing to a rule
• Add a CLI option
• Add something to the core
• Other, please explain:

What changes did you make? (Give an overview)

Is there anything you'd like reviewers to focus on?

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[github-actions]

Dart Code Metrics unused files report of dart_code_metrics. ✅

Summary

• Scanned package folders: bin, example, lib
• No unused files found! ✅

[github-actions]

Dart Code Metrics analyze report of dart_code_metrics. ✅

Summary

• Scanned folders: bin, example, lib, test

• Total scanned files: 515

• Total lines of source code: 8882

• Total classes: 388

• Average Cyclomatic Number per line of code: 0.37 / 1

• Average Source Lines of Code per method: 6

• Total tech debt: 1718.0 hours

• Found issues: 5 ⚠

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@1b6a848). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master    #1045   +/-   ##
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  Coverage          ?   86.46%           
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  Files             ?      326           
  Lines             ?     6929           
  Branches          ?        0           
=========================================
  Hits              ?     5991           
  Misses            ?      938           
  Partials          ?        0           

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