feat: implement new namespace strategy

[barak007]

Implement new universal namespace strategy
Features:

• custom hash function
• custom hash length strategy
• custom/optional package info
• better hook interface for complex namespace generation

This strategy should support our existing node, no collision and default strategy

Should close:

• feat: add ability to pass buildNamespace function to default namespace strategy #2516
• Remove the requirement for the referenced file in st-namespace-reference to be present #2286

Should handle:

• feat(core): added origin filepath to processNamespace #2313

TODO:

• pass in the origin argument
• check if StylableOptimizer can still work for namespaces without hash
• replace usages of old namespace strategy (maybe only in v5)?

Notes:
This strategy should not treated as breaking change unless someone was depending on the current hash (murmur) output.
We still need to check if we don't use namespace\d+ regexp in out solutions like:

• packages\webpack-extensions\test\e2e\metadata-loader-case.spec.ts
• packages\webpack-plugin\test\e2e\dev-mode-warnings-project.spec.ts
• packages\webpack-plugin\test\e2e\hooked-project.spec.ts
• packages\webpack-plugin\test\e2e\mixins-project.spec.ts
• packages\webpack-plugin\test\e2e\stc-watched-project.spec.ts
• packages\webpack-plugin\test\e2e\watched-project.spec.ts
• packages\webpack-plugin\test\e2e\projects\hooked-project\stylable.config.js