Introduce UHFAWG as known device type

[tobiasah]

Description:

Fixes issue: #

Checklist:

• Add tests for the change to show correct behavior.
• Add or update relevant docs, code and examples.
• Update CHANGELOG.rst with relevant information and add the issue number.
• Add .. versionchanged:: where necessary.

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (8910a10) 99.59% compared to head (8fc26f1) 99.59%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #257   +/-   ##
=======================================
  Coverage   99.59%   99.59%           
=======================================
  Files          40       40           
  Lines        2495     2495           
=======================================
  Hits         2485     2485           
  Misses         10       10           

Files Changed	Coverage Δ
src/zhinst/toolkit/driver/devices/__init__.py	100.00% <ø> (ø)

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