feat: support dynamic method name for member-ordering

[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:

#956

[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: 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

Merging #1044 (6aebc29) into master (371f598) will decrease coverage by 0.05%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1044      +/-   ##
==========================================
- Coverage   86.51%   86.46%   -0.06%     
==========================================
  Files         326      326              
  Lines        6958     6929      -29     
==========================================
- Hits         6020     5991      -29     
  Misses        938      938              

Impacted Files	Coverage Δ
...ules/rules_list/member_ordering/config_parser.dart	100.00% <100.00%> (ø)
...ules_list/member_ordering/models/member_group.dart	93.75% <100.00%> (-0.76%)	⬇️
...yzer/rules/rules_list/member_ordering/visitor.dart	96.82% <100.00%> (-0.36%)	⬇️

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