TUI authentication fix

[tieneupin]

After implementing proper authentication between the backend, the client, and the web frontend, the TUI's previous authentication method was not considered, leading to it failing authentication when connecting to the backend server after the recent update.

This PR fixes that by adding an additional elif ... block that takes the TUI's token into account and authorises that. In the longer term, having the TUI use the same authentication method as the instrument server would be ideal, but this is a lower priority.

[codecov]

Codecov Report

Attention: Patch coverage is 40.00000% with 9 lines in your changes missing coverage. Please review.

Project coverage is 31.85%. Comparing base (2a4bf84) to head (92acd0c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #604      +/-   ##
==========================================
- Coverage   31.86%   31.85%   -0.02%     
==========================================
  Files          91       91              
  Lines       10737    10747      +10     
  Branches     1425     1429       +4     
==========================================
+ Hits         3421     3423       +2     
- Misses       7203     7211       +8     
  Partials      113      113              

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[d-j-hatton]

I was thinking maybe we should have a config option to turn this behaviour off so we can make some systems more secure

[tieneupin]

I was thinking maybe we should have a config option to turn this behaviour off so we can make some systems more secure

Added a key to the security config to optionally allow verification using the less secure 'user' token.