[Resources.Azure] Rename AddAppServiceDetector to AddAzureAppServiceDetector

[joegoldman2]

Fixes #1874.

For significant contributions please make sure you have completed the following items:

• Appropriate CHANGELOG.md updated for non-trivial changes
• Design discussion issue [Resources.Azure] Rename AddAppServiceDetector to AddAzureAppServiceDetector #1874.
• Changes in public API reviewed

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 77.94%. Comparing base (71655ce) to head (707c208).
Report is 301 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1883      +/-   ##
==========================================
+ Coverage   73.91%   77.94%   +4.02%     
==========================================
  Files         267        6     -261     
  Lines        9615      136    -9479     
==========================================
- Hits         7107      106    -7001     
+ Misses       2508       30    -2478     

Flag	Coverage Δ
unittests-Resources.Azure	77.94% <ø> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
....Resources.Azure/AzureResourceBuilderExtensions.cs	0.00% <ø> (ø)

... and 272 files with indirect coverage changes

[Kielek]

I suppose that readme should also be updated together with chabgelog