feat!: split code between new com package and core

[barak007]

This PR extract the communication from @wixc3/engine-core into @wixc3/engine-com

Why:

• This is the most early tech debt in core
• Separation of concerns
• ease of documentation

Tasks:

• [x] split files
• [x] split tests
• [ ] list breaking changes
• [ ] remove todos
• [ ] ensure types and commons are good
• [x] replace usages of exports in other packages
• [ ] SERVICE_CONFIG?
• [ ] extenal typo

Breaking changes:

• runEngineApp
• export split
• no internal index?
• utils split

This is a major version