Native Bulk Element Deletion API

[RohitPtnkr1996]

itwinjs-core: iTwin/itwinjs-core#9052

Fixes: https://github.com/iTwin/itwinjs-backlog/issues/1841

[Copilot]

Pull request overview

This PR adds a native bulk element deletion capability to the iModel native layer and exposes it through the Node addon/TypeScript API, including a specialized path for deleting DefinitionElements with dependency checks.

Changes:

• Added deleteElements and deleteDefinitionElements to the TypeScript native interface and N-API bindings.
• Implemented bulk deletion in DgnElements, including descendant expansion, code-scope FK safety checks, and bulk link-table cleanup.
• Extended DefinitionElementUsageInfo to support excluding a set of element ids during usage scans.

Reviewed changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
iModelJsNodeAddon/api_package/ts/src/NativeLibrary.ts	Declares new native bulk deletion APIs in the TS surface.
iModelJsNodeAddon/JsInteropDgnDb.cpp	Parses JS arrays of ids and calls new native bulk deletion entry points.
iModelJsNodeAddon/IModelJsNative.h	Adds JsInterop declarations for bulk deletion.
iModelJsNodeAddon/IModelJsNative.cpp	Adds N-API instance methods and marshals failure-id results back to JS.
iModelCore/iModelPlatform/PublicAPI/DgnPlatform/DgnElement.h	Adds bulk-operation state on DgnElements and extends usage-info API/signature.
iModelCore/iModelPlatform/DgnCore/DgnElements.cpp	Implements bulk element deletion and definition-element deletion logic.
iModelCore/iModelPlatform/DgnCore/DgnElement.cpp	Skips per-element link-table cleanup during bulk delete (handled in bulk).
iModelCore/iModelPlatform/DgnCore/DefinitionElementUsageInfo.cpp	Adds optional “exclude ids” filtering to usage queries/scans.