feat: implement deep keys assertions with ArrayLikeOrSizedIterable support

[nev21]

Add deep equality key comparison for object keys in Maps, Sets, and plain objects. Supports passing keys as Arrays, Sets, Maps, or other iterables.

Key Changes:

• Implement anyDeepKeysFunc and allDeepKeysFunc with deep equality comparison
• Add six assert methods: hasAnyDeepKeys, hasAllDeepKeys, and their negations (notHaveAnyDeepKeys, doesNotHaveAnyDeepKeys, notHaveAllDeepKeys, doesNotHaveAllDeepKeys)
• Update IAssertClass signatures from varargs (...keys) to fixed arguments (keys, initMsg?) to support optional custom error messages
• Add ArrayLikeOrSizedIterable support: keys parameter accepts Arrays, Sets, Maps, or any iterable collection
• Implement _isMsgSource logic in _getArgKeysForDeep to properly handle optional initMsg parameter
• Wire deep keys through IAllOp, IAnyOp, and IDeepOp interfaces

Documentation:

• Update @param descriptions to mention Sets, Maps, and iterables
• Change examples from varargs syntax to array syntax
• Add deep keys to README and Chai compatibility documentation

Addresses Chai v5.x compatibility for deep keys operations.

[Copilot]

Pull request overview

This PR implements deep key assertions for Maps, Sets, and objects using deep equality comparison instead of strict reference equality. This addresses Chai v5.x compatibility requirements for deep key operations.

Changes:

• Adds six new assertion methods (hasAnyDeepKeys, hasAllDeepKeys, notHaveAnyDeepKeys, doesNotHaveAnyDeepKeys, notHaveAllDeepKeys, doesNotHaveAllDeepKeys) with deep equality key matching
• Implements ArrayLikeOrSizedIterable support for keys parameter, allowing Arrays, Sets, Maps, and other iterables
• Integrates deep keys functionality through operation chains (has.any.deep.keys, has.all.deep.keys, etc.)

Reviewed changes

Copilot reviewed 15 out of 15 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
core/test/src/assert/assert.deepKeys.test.ts	Comprehensive test suite for deep keys assertions with Maps, Sets, objects, and edge cases
shim/chai/test/src/chaiAssert.test.ts	Uncommented and enabled deep keys tests for Chai compatibility verification
shim/chai/src/assert/chaiAssert.ts	Added Chai-specific deep keys methods mapping to expression adapters
shim/chai/README.md	Documented new deep keys support for Maps/Sets with object keys
core/src/assert/ops/keysOp.ts	Implemented anyDeepKeyFilterOp, allDeepKeyFilterOp, and deepKeysOp operations
core/src/assert/ops/deepOp.ts	Integrated deep keys operation into IDeepOp interface
core/src/assert/ops/allOp.ts	Added deep property to IAnyOp and IAllOp for deep key filtering
core/src/assert/interface/ops/IDeepOp.ts	Added keys property for deep equality key operations
core/src/assert/interface/ops/IAnyOp.ts	Added deep property returning IKeysOp for any.deep.keys chains
core/src/assert/interface/ops/IAllOp.ts	Added deep property returning IKeysOp for all.deep.keys chains
core/src/assert/interface/IAssertClass.ts	Added type definitions and JSDoc for six new deep keys assertion methods
core/src/assert/funcs/keysFunc.ts	Implemented anyDeepKeysFunc and allDeepKeysFunc with deep equality comparison logic
core/src/assert/assertClass.ts	Registered deep keys assertion functions with expression adapters
core/README.md	Updated features list to mention deep keys support
.github/copilot-instructions.md	Added versioning guidelines for @SInCE tags on new features