[wasm] Unify BuildWasmRuntimes target and use cmake (#58878)

[wasm] Unify BuildWasmRuntimes target and use cmake (#58878)

Add new cmake file to build native parts of `BuildWasmRuntimes` target. That unifies the build on windows and mac/linux.

Implements https://github.com/dotnet/runtime/issues/51553

* [wasm] Add cmake file for runtime native build

* Use the new cmake file

* Set the emcc configuration flags

The ninja generator is not multi-configuration cmake generator, so we
have to pass them from msbuild

* Update Makefile

* Fix few build issues

* Copy ICU files to native bin dir

* Copy source files to native bin dir

* Copy required header file

* Make all settings target specific