feat: defined_value_getter_type

[ronnnnn]

Overview

Checks T Function() definitions.

Copilot Summary

Details

This pull request primarily introduces a new lint rule defined_value_getter_type to the nilts package. This rule checks for the use of T Function() definitions and suggests replacing them with ValueGetter from the Flutter SDK. The rule is added to the lint rules list in nilts.dart and its priority is defined in change_priority.dart. The README.md is updated to include this new rule in the lint rules table and details about it. Additionally, some existing lint rules descriptions in README.md are modified to enclose certain code identifiers in backticks for better readability. The test files are updated to include tests for this new rule and to ignore this rule where necessary.

New lint rule addition:

• packages/nilts/lib/src/lints/defined_value_getter_type.dart: Added a new lint rule defined_value_getter_type that checks for T Function() definitions and suggests replacing them with ValueGetter from the Flutter SDK.

Lint rules list and priority updates:

• packages/nilts/lib/nilts.dart: Added the new lint rule to the lint rules list. [1] [2]
• packages/nilts/lib/src/change_priority.dart: Defined the priority for the new lint rule.

README updates:

• packages/nilts/README.md: Updated the lint rules table to include the new rule and modified some existing lint rules descriptions to enclose certain code identifiers in backticks. [1] [2] [3] [4] [5]

Test files updates:

• packages/nilts_test/test/lints/defined_value_callback_type.dart: Updated to ignore the new lint rule.
• packages/nilts_test/test/lints/defined_value_getter_type.dart: Added tests for the new lint rule.
• packages/nilts_test/test/lints/defined_void_callback_type.dart: Updated to ignore the new lint rule.

Feature type

• Lint Rule
• Quick fix
• Assist
• Other (Update docs, Configure CI, etc...)