Merge dashpay#6072: refactor: use new type of composite commands for protx NNN

7b44af2 refactor: move common code inside protx_register_common_wrapper (Konstantin Akimov)
89d5e26 refactor: replace bunch of bool flags to the enum (Konstantin Akimov)
1351bc9 refactor: move common code to the wrapper (Konstantin Akimov)
8d4c28a refactor: remove unused protx code from old implementation (Konstantin Akimov)
2a837f8 refactor: use new composite for RPC 'protx NNN' (Konstantin Akimov)

Pull request description:

  ## Issue being fixed or feature implemented
  See dashpay#6051

  ## What was done?
  Commands starting from 'protx ...' uses new a new way to make composite commands.

  ## How Has This Been Tested?
  Run unit/functional tests.

  ## Breaking Changes
  N/A

  ## Checklist:
  - [x] I have performed a self-review of my own code
  - [x] I have commented my code, particularly in hard-to-understand areas
  - [x] I have added or updated relevant unit/integration/functional/e2e tests
  - [ ] I have made corresponding changes to the documentation
  - [x] I have assigned this pull request to a milestone

ACKs for top commit:
  PastaPastaPasta:
    utACK 7b44af2

Tree-SHA512: a5124121de93ba566bfa6c7c58a5217446301dd027839d137e056df00388282af6be0feb0b81ea0217310e12231a68e3b405fa82b66df93a3fb159d341d7a199

Author: PastaPastaPasta