Refactor protocol payload and variable parsing

[Ice3man543]

Please describe your feature request:

Currently the code related to protocol payload and variable parsing is scattered across multiple files and is chaotic to change and use. It should be replaced with a package specifically handling all the related operations to provide a more reliable interface for accessing and passing variables across protocols.

Should also fix #1770 and other related issues in a better way for all protocols.

[Mzack9999]

The issue is being worked on and currently on hold as it needs further discussion:

• [x] Cleanup code and create draft PR
• [x] Identify specific blockers/requirements
• [ ] Create follow up tickets/todo list