FDC3 improvements

[lilla28]

Implemented:
getOrCreateChannel
getUserChannels
getInfo
findInstances
getAppMetadata

Added some implementation to track the joined userchannels properly via fdc3.joinUserChannels -> messagerouter.invoke calls, todos added for the restriction of joining based on the userchannel set.

Refactored raiseIntent, findIntent, findIntentsByContext based on the FDC3 Conformance tests -> added exception handling based on the tests, quering based on the intentmetadata's key instead of the Name property

[codecov]

Codecov Report

Attention: Patch coverage is 82.92683% with 147 lines in your changes missing coverage. Please review.

Project coverage is 68.93%. Comparing base (a75e955) to head (f6d7c38).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
...Stanley.ComposeUI.DesktopAgent/Fdc3DesktopAgent.cs	71.70%	91 Missing and 25 partials ⚠️
...fdc3/src/infrastructure/ComposeUIIntentListener.ts	0.00%	7 Missing ⚠️
...e/Internal/Fdc3DesktopAgentMessageRouterService.cs	85.71%	4 Missing and 1 partial ⚠️
...opAgent/Converters/DisplayMetadataJsonConverter.cs	0.00%	3 Missing ⚠️
.../MorganStanley.ComposeUI.DesktopAgent/Fdc3Topic.cs	76.92%	2 Missing and 1 partial ⚠️
...dc3/js/composeui-fdc3/src/ComposeUIDesktopAgent.ts	92.10%	3 Missing ⚠️
.../src/infrastructure/MessageRouterChannelFactory.ts	97.14%	2 Missing ⚠️
...rastructure/messages/Fdc3GetUserChannelsRequest.ts	86.66%	2 Missing ⚠️
...rastructure/messages/Fdc3JoinUserChannelRequest.ts	86.66%	2 Missing ⚠️
...nley.ComposeUI.DesktopAgent/Channels/AppChannel.cs	50.00%	1 Missing ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #744      +/-   ##
==========================================
+ Coverage   67.66%   68.93%   +1.27%     
==========================================
  Files         261      289      +28     
  Lines        7997     8612     +615     
  Branches      894     1012     +118     
==========================================
+ Hits         5411     5937     +526     
- Misses       2399     2462      +63     
- Partials      187      213      +26     

Files with missing lines	Coverage Δ
...Stanley.ComposeUI.DesktopAgent/Channels/Channel.cs	90.14% <100.00%> (+0.43%)	⬆️
....DesktopAgent/Contracts/CreateAppChannelRequest.cs	100.00% <100.00%> (ø)
...DesktopAgent/Contracts/CreateAppChannelResponse.cs	100.00% <100.00%> (ø)
...eUI.DesktopAgent/Contracts/FindInstancesRequest.cs	100.00% <100.00%> (ø)
...UI.DesktopAgent/Contracts/FindInstancesResponse.cs	100.00% <100.00%> (ø)
...UI.DesktopAgent/Contracts/GetAppMetadataRequest.cs	100.00% <100.00%> (ø)
...I.DesktopAgent/Contracts/GetAppMetadataResponse.cs	100.00% <100.00%> (ø)
...ComposeUI.DesktopAgent/Contracts/GetInfoRequest.cs	100.00% <100.00%> (ø)
...omposeUI.DesktopAgent/Contracts/GetInfoResponse.cs	100.00% <100.00%> (ø)
...I.DesktopAgent/Contracts/GetUserChannelsRequest.cs	100.00% <100.00%> (ø)
... and 34 more

... and 9 files with indirect coverage changes

[ZKRobi]

Please squash the follow-up commits into the appropriate original commits