Add support for system params when deploying extensions

[joehan]

Description

Adds support for configuring system params when installing or updating extension instances, as described in go/firex-resource-params-api. This feature is currently guarded behind a backend experiment.

To do in follow up PRs:

• Add special handling for mapping LOCATION to firebaseextensions.v1beta.function/location when updating instances
• Add emulator support
• Add support for hiding advanced params behind an extra prompt

Scenarios Tested

Successfully deployed an extension instance with its location configured to us-east4 via system params, and verified that the underlying functions where deployed to us-east4

[codecov-commenter]

Codecov Report

Base: 56.33% // Head: 56.32% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (279ef81) compared to base (177c99d).
Patch coverage: 43.33% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5414      +/-   ##
==========================================
- Coverage   56.33%   56.32%   -0.01%     
==========================================
  Files         315      315              
  Lines       21303    21324      +21     
  Branches     4343     4349       +6     
==========================================
+ Hits        12000    12011      +11     
- Misses       8264     8272       +8     
- Partials     1039     1041       +2     

Impacted Files	Coverage Δ
src/deploy/extensions/tasks.ts	18.64% <ø> (ø)
src/extensions/types.ts	100.00% <ø> (ø)
src/functions/env.ts	95.90% <ø> (ø)
src/deploy/extensions/planner.ts	51.21% <18.18%> (-0.07%)	⬇️
src/extensions/paramHelper.ts	80.20% <33.33%> (-1.52%)	⬇️
src/extensions/extensionsApi.ts	66.94% <40.00%> (-1.17%)	⬇️
src/functional.ts	91.48% <100.00%> (+0.79%)	⬆️

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