Improve CLI stability

[rzadp]

• Add TS to all modules
  • cli-core
  • cli-data
  • Rest of modules
• Refactor and add more tests to all modules
  • cli-data
  • Rest of modules
• Remove duplication from StateManager
• init function of extension - change it so that it is not modifying the parameter but rather it is returning the new state
• Change tests so that print are not clouding the tests output