feat(container/gset): add generic set feature

[joy999]

Add generic set featrue: TSet[T]

[Copilot]

Pull Request Overview

This PR introduces a generic set implementation TSet[T] to the gset package, refactoring existing type-specific sets (Set, StrSet, IntSet) to use this new generic implementation. This eliminates code duplication while maintaining backward compatibility through wrapper types with lazy initialization.

Key changes:

• Added new generic TSet[T comparable] type with full set operations
• Refactored Set, StrSet, and IntSet to embed TSet with lazy initialization via sync.Once
• Reduced code duplication by delegating operations to the generic implementation

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 14 comments.

File	Description
container/gset/gset_t_set.go	New generic set implementation with all core set operations
container/gset/gset_str_set.go	Refactored to wrap TSet[string] with lazy initialization
container/gset/gset_int_set.go	Refactored to wrap TSet[int] with lazy initialization
container/gset/gset_any_set.go	Refactored to wrap TSet[any] with lazy initialization

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[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (2)

container/gset/gset_str_set.go:113

• After refactoring, set.mu and set.data are no longer direct fields of StrSet. This code should be updated to delegate to set.TSet.Remove(item) instead of directly accessing the mutex and data map.

	set.mu.Lock()
	if set.data != nil {
		delete(set.data, item)
	}
	set.mu.Unlock()

container/gset/gset_str_set.go:254

• After refactoring, set.mu and set.data are no longer direct fields of StrSet. This Walk implementation should delegate to set.TSet.Walk(f) instead of directly accessing the embedded type's fields.

	set.mu.Lock()
	defer set.mu.Unlock()
	m := make(map[string]struct{}, len(set.data))
	for k, v := range set.data {
		m[f(k)] = v
	}

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[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 4 changed files in this pull request and generated 5 comments.

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