Preload Fdc3 2.0 ComposeUIDesktopAgent for Embedded Browser

[kruplm]

Changes in this PR

1. an IIFE bundle is being generated from our FDC3 DesktopAgent implementation, and preloaded into the Embedded Browser
2. The IIFE Bundle is an Embedded Resource.
3. The exports for the ComposeUIDesktopAgent have been changed so that methods can be accessible as per the standard: e.g fdc3.broadcast()
   4. copy-iife-bundle.ps1: script for copying the bundle. Also used as a pre-build event for .NET
4. Prebuild event was added to build the composeui-fdc3 package

• As a result the CI builds the JavaScript components first, so they can be used by the shell

5. InjectFDC3(): It's part of the Shell, but it should be integrated into the FDC3 backend in a separate integration PR.
6. PreloadFdc3.cs: For now it only contains the resource name for the FDC3 IIFE bundle, but it can be extended and moved to the DesktopAgent.sln later. The Namespace could contain other preloads es well for the Message Router, etc
7. Tested with the FDC3 workbench and also added it for the demo ribbon menu and for the launch settings

Out of Scope for this PR

• Making FDC3 an optional feature
• Revisiting solutions for handling the building of dependencies across languages (see point 4)
• Integrating with FDC3 backend (see point 5 and 6)

[codecov]

Codecov Report

Merging #243 (7f60a89) into main (ce187cf) will decrease coverage by 0.10%.
The diff coverage is 66.66%.

@@            Coverage Diff             @@
##             main     #243      +/-   ##
==========================================
- Coverage   74.92%   74.83%   -0.10%     
==========================================
  Files         155      156       +1     
  Lines        5507     5503       -4     
  Branches      233      233              
==========================================
- Hits         4126     4118       -8     
- Misses       1380     1384       +4     
  Partials        1        1              

Impacted Files	Coverage Δ
src/shell/dotnet/Shell/App.xaml.cs	0.00% <0.00%> (ø)
src/shell/dotnet/Shell/Fdc3/PreloadFdc3.cs	100.00% <100.00%> (ø)
src/shell/dotnet/Shell/Utilities/ResourceReader.cs	100.00% <100.00%> (ø)
...ell/js/composeui-fdc3/src/ComposeUIDesktopAgent.ts	82.95% <100.00%> (ø)

... and 1 file with indirect coverage changes