Finish docs for 1.2.0 release

[jreineckearm]

Finish already started docs work here https://github.com/Open-CMSIS-Pack/vscode-cmsis-debugger/tree/doc_updates_for_1_2_0
In particular

• Finish RTOS Views docs after moving it to be a recommended not yet included extension.
• Live Watch docs.
• [Feature Request]: Review documentation about breakpoints #579