Added support for CF3v2 functions in the Extensions emulator.

[pavelgj]

No description provided.

[codecov-commenter]

Codecov Report

Base: 56.28% // Head: 56.35% // Increases project coverage by +0.07% 🎉

Coverage data is based on head (801295e) compared to base (1ebb9f8).
Patch coverage: 72.44% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5306      +/-   ##
==========================================
+ Coverage   56.28%   56.35%   +0.07%     
==========================================
  Files         309      310       +1     
  Lines       20830    20907      +77     
  Branches     4229     4250      +21     
==========================================
+ Hits        11725    11783      +58     
- Misses       8093     8100       +7     
- Partials     1012     1024      +12     

Impacted Files	Coverage Δ
src/extensions/billingMigrationHelper.ts	72.72% <42.85%> (-5.06%)	⬇️
src/extensions/emulator/specHelper.ts	48.21% <44.44%> (+1.27%)	⬆️
src/emulator/eventarcEmulatorUtils.ts	62.06% <62.06%> (ø)
src/extensions/emulator/triggerHelper.ts	84.09% <82.05%> (-9.66%)	⬇️
src/deploy/extensions/planner.ts	51.28% <100.00%> (+0.63%)	⬆️
src/emulator/eventarcEmulator.ts	10.22% <100.00%> (+1.03%)	⬆️
src/emulator/extensions/validation.ts	86.11% <100.00%> (+0.39%)	⬆️
src/extensions/displayExtensionInfo.ts	80.95% <100.00%> (+0.62%)	⬆️
src/extensions/extensionsHelper.ts	62.57% <100.00%> (+0.11%)	⬆️
src/extensions/types.ts	100.00% <100.00%> (ø)
... and 1 more

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[joehan]

Some small improvments but mostly LGTM. If you're feeling inspired, consider adding an extension with v2 functions in it to the integration test as well: https://github.com/firebase/firebase-tools/tree/master/scripts/extensions-emulator-tests