Add route for fetching all keystores with root controller.

[jameseaster]

Resolves - add get all keystores route

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What kind of change does this PR introduce?

• new api route

What is the current behavior?

• no route available for fetching all keystores with root controller

What is the new behavior?

• added route for fetching all keystores with root controller

Does this PR introduce a breaking change?

• no

How has this been tested?

• locally, via symlink

Screenshots:

• n/a

[codecov-commenter]

Codecov Report

❌ Patch coverage is 53.62319% with 32 lines in your changes missing coverage. Please review.
✅ Project coverage is 92.50%. Comparing base (030def1) to head (3b20442).

Files with missing lines	Patch %	Lines
lib/BedrockKeystoreConfigStorage.js	8.33%	22 Missing ⚠️
lib/http.js	70.58%	10 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #103      +/-   ##
==========================================
- Coverage   95.67%   92.50%   -3.18%     
==========================================
  Files          10       10              
  Lines         855      920      +65     
==========================================
+ Hits          818      851      +33     
- Misses         37       69      +32     

Files with missing lines	Coverage Δ
schemas/bedrock-kms-http.js	100.00% <100.00%> (ø)
lib/http.js	92.49% <70.58%> (-2.95%)	⬇️
lib/BedrockKeystoreConfigStorage.js	60.00% <8.33%> (-34.45%)	⬇️

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[dlongley]

Approving assuming the suggestions will go in. Thanks!