[dmt] Add feature flag

[RottenRat]

Description

Added support for rule-specific impact configuration at the module level, allowing you to override the severity level (error/warn/ignored) for specific linter rules.

What's added

1. Rule-specific Impact in Linter Settings

• Added the RulesSettings map[string]RuleSettings field to all linter settings structures
• Added the GetRuleImpact(ruleName string) *pkg.Level and SetRuleImpact(ruleName string, impact *pkg.Level) methods for all linter settings
• Support for rule-specific impact for all linters: module, container, hooks, images, no-cyrillic, openapi, rbac, templates

2. Rule Impact Function in Error System

• Added type RuleImpactFunc func(linterID, ruleID string) *pkg.Level in pkg/errors/errors.go
• Added the ruleImpactFunc RuleImpactFunc field to the LintRuleErrorsList structure
• Updated the add method to apply rule-specific impact before maxLevel

3. Improved error display

• Updated the emoji display logic in internal/manager/manager.go

4. DTO/Runtime Architecture Separation

• Added Runtime structures in pkg/config/runtime.go:
  RuntimeRootConfig, RuntimeLintersSettings for execution

• Added remapper functions in pkg/config/remapper.go:
  ToRuntime() methods for converting DTO -> Runtime with global settings merging

• Added adapter functions in pkg/config/adapter.go:
  ToLintersSettings() for backward compatibility with existing linters

5. Configuration Loading Refactoring

• Updated module loading in internal/module/module.go. Now loads configuration using DTO -> Runtime -> Legacy flow
• Proper separation of concerns between data loading and business logic
• Now uses RuleImpactFunc for applying rule-specific impact

Local module configuration (dmt-config.yaml in the module folder):

linters-settings:
  module:
    impact: error
    rules-settings:
      definition-file:
        impact: warn
      helmignore:
        impact: warn
      oss:
        impact: ignored
  container:
    impact: error
    rules-settings:
      api-version:
        impact: warn
      image-digest:
        impact: ignored

Tests

Linter	No rule	With rule	Waiting for
object-api-version	🐒 (error)	⚠️ (warning)	api-version: warn
definition-file	🐒 (error)	⚠️ (warning)	definition-file: warn
helmignore	🐒 (error)	⚠️ (warning)	helmignore: warn
image-digest	🐒 (error)	ignored	image-digest: ignored
oss	🐒 (error)	ignored	oss: ignored
no specific rules	🐒 (error)	🐒 (error)	as in it