feat: add strict config option to avoid-collection-methods-with-unrelated-types

[incendial]

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:

#1108

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
No Duplication information

[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: 538

• Total lines of source code: 9487

• Total classes: 405

• Average Cyclomatic Number per line of code: 0.37 / 2

• Average Source Lines of Code per method: 6

• Total tech debt: 2000.0 hours

• Found issues: 5 ⚠

[codecov]

Codecov Report

Merging #1111 (7024c66) into master (b8f190c) will increase coverage by 0.01%.
The diff coverage is 100.00%.

❗ Current head 7024c66 differs from pull request most recent head 80714e4. Consider uploading reports for the commit 80714e4 to get more accurate results

@@            Coverage Diff             @@
##           master    #1111      +/-   ##
==========================================
+ Coverage   85.02%   85.04%   +0.01%     
==========================================
  Files         339      340       +1     
  Lines        7445     7454       +9     
==========================================
+ Hits         6330     6339       +9     
  Misses       1115     1115              

Impacted Files	Coverage Δ
..._collection_methods_with_unrelated_types_rule.dart	100.00% <100.00%> (ø)
...on_methods_with_unrelated_types/config_parser.dart	100.00% <100.00%> (ø)
...llection_methods_with_unrelated_types/visitor.dart	100.00% <100.00%> (ø)

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