refactor(28015): Align frontend and backend

[vanch3d]

See https://hivemq.kanbanize.com/ctrl_board/57/cards/28015/details/

This PR is yet another refactoring of the frontend to try and align with the backend changes.

• update the missing required properties in many APis
• remove client-related functionality
• refactor handling of tags and topic filters
• refactor mapping
• refactor sampling

The new design includes the following changes:

• xxxToMQTT and mqttToXXX mappings have been "disabled" from the current main adapter
• tags are editable from the workspace (check on the device node)
• topic filters are editable from the workspace (check the edge node)
• inward and outward mappings are now available from the workspace (check the adapter node)
  • inward mappings include the tag
  • outward mappings include topic filter, tag and field mapping instructions

The result is Edge with a full set of functionalities mostly devoid of mocks and magic tricks. Note that the alignment is done with the current state of master, which doesn't implement all the required endpoints.

Out-of-scope

• More changes are being made in yet another branch. These have not been identified yet and will be covered by yet another refactoring/realignment ticket
• Several discrepancies and bugs in the backend have been flagged up and, once fixed, will be handed in the frontend in another refactoring/realignment ticket
  • https://hivemq.kanbanize.com/ctrl_board/57/cards/28249/details/
  • https://hivemq.kanbanize.com/ctrl_board/57/cards/28250/details/

After