Private channels

[ZKRobi]

To try Private Channels, use the example "fdc3-pricing-and-chat". It has a readme to see how to use it.
There are some minor fixes in separate commits that were too small to separate and in cases blocking for this feature.

[codecov]

Codecov Report

Attention: Patch coverage is 63.66864% with 307 lines in your changes missing coverage. Please review.

Project coverage is 67.66%. Comparing base (324b85c) to head (08d1829).
Report is 24 commits behind head on main.

Files	Patch %	Lines
...fdc3/src/infrastructure/ComposeUIPrivateChannel.ts	40.79%	119 Missing ⚠️
.../src/infrastructure/MessageRouterChannelFactory.ts	64.58%	34 Missing ⚠️
...ture/PrivateChannelContextListenerEventListener.ts	33.33%	30 Missing ⚠️
...structure/PrivateChannelDisconnectEventListener.ts	33.33%	30 Missing ⚠️
...c3/src/infrastructure/ComposeUIIntentResolution.ts	24.00%	19 Missing ⚠️
...ucture/messages/Fdc3PrivateChannelInternalEvent.ts	50.00%	13 Missing ⚠️
...topAgent/Contracts/CreatePrivateChannelResponse.cs	0.00%	10 Missing ⚠️
...dc3/js/composeui-fdc3/src/ComposeUIDesktopAgent.ts	91.75%	8 Missing ⚠️
...dc3/src/infrastructure/ComposeUIContextListener.ts	74.19%	8 Missing ⚠️
...Stanley.ComposeUI.DesktopAgent/Channels/Channel.cs	89.70%	4 Missing and 3 partials ⚠️
... and 7 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #706      +/-   ##
==========================================
- Coverage   69.26%   67.66%   -1.61%     
==========================================
  Files         250      261      +11     
  Lines        7608     7997     +389     
  Branches      912      847      -65     
==========================================
+ Hits         5270     5411     +141     
- Misses       2149     2400     +251     
+ Partials      189      186       -3     

Files	Coverage Δ
...ley.ComposeUI.DesktopAgent/Channels/UserChannel.cs	100.00% <100.00%> (ø)
...re/Internal/ResolverUIMessageRouterCommunicator.cs	100.00% <ø> (ø)
...poseui-fdc3/src/infrastructure/ComposeUIChannel.ts	96.38% <100.00%> (-3.62%)	⬇️
...ucture/messages/Fdc3CreatePrivateChannelRequest.ts	100.00% <100.00%> (ø)
...et/src/Abstractions/MessageBufferJsonExtensions.cs	100.00% <100.00%> (ø)
...DependencyInjection/ServiceCollectionExtensions.cs	100.00% <100.00%> (ø)
...net/src/Core/MessageBufferFactoryJsonExtensions.cs	100.00% <ø> (ø)
.../dotnet/Shell/Fdc3/ResolverUI/ResolverUIService.cs	65.38% <ø> (ø)
...omposeui-fdc3/src/infrastructure/ComposeUITopic.ts	91.00% <94.44%> (+1.30%)	⬆️
....ComposeUI.DesktopAgent/Channels/PrivateChannel.cs	0.00% <0.00%> (ø)
... and 15 more

... and 4 files with indirect coverage changes