feat: add GET /config route

[natanasow]

Description:

To provide more transparency and operational insight to developers using the JSON RPC relay, it would be beneficial to expose configuration and deployment block information. Such information could aid in troubleshooting and understanding the context in which the relay is running. However, it's crucial to maintain conformity with the Ethereum JSON RPC API specification, so altering existing endpoints is not desirable.

Solution:
Introduce a new RPC method /config. This method could provide the necessary configuration data.

Related issue(s):

Fixes #1298

Notes for reviewer:

Checklist

• Documented (Code comments, README, etc.)
• Tested (unit, integration, etc.)

[github-actions]

Test Results

 18 files   -   3  236 suites   - 66   33m 15s ⏱️ - 15m 32s
618 tests  -   1  614 ✅ +  1  4 💤 ±0  0 ❌  - 2 
634 runs   - 189  630 ✅  - 185  4 💤 ±0  0 ❌  - 4 

Results for commit 4413339. ± Comparison against base commit aac3b28.

This pull request removes 1 test.

"after all" hook for "@release should return the code through a websocket" ‑ RPC Server Acceptance Tests Acceptance tests @web-socket-batch-2 eth_getCode "after all" hook for "@release should return the code through a websocket"

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

Attention: Patch coverage is 86.95652% with 6 lines in your changes missing coverage. Please review.

Project coverage is 85.78%. Comparing base (7955dae) to head (1f0c08d).

Files with missing lines	Patch %	Lines
packages/relay/src/lib/hedera.ts	92.00%	1 Missing and 1 partial ⚠️
packages/server/src/routes/hederaRoutes.ts	66.66%	2 Missing ⚠️
packages/server/src/utils.ts	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3559      +/-   ##
==========================================
+ Coverage   85.73%   85.78%   +0.05%     
==========================================
  Files          75       77       +2     
  Lines        4836     4882      +46     
  Branches      998     1000       +2     
==========================================
+ Hits         4146     4188      +42     
- Misses        402      405       +3     
- Partials      288      289       +1     

Flag	Coverage Δ
config-service	94.04% <100.00%> (+0.45%)	⬆️
relay	79.38% <93.10%> (+0.10%)	⬆️
server	85.04% <75.00%> (-0.12%)	⬇️
ws-server	36.31% <ø> (ø)

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

Files with missing lines	Coverage Δ
...ckages/config-service/src/services/globalConfig.ts	100.00% <ø> (ø)
packages/config-service/src/services/index.ts	94.11% <100.00%> (+1.26%)	⬆️
packages/relay/src/index.ts	100.00% <ø> (ø)
packages/relay/src/lib/constants.ts	100.00% <100.00%> (ø)
packages/relay/src/lib/relay.ts	94.20% <100.00%> (+0.26%)	⬆️
...s/server/src/koaJsonRpc/lib/methodConfiguration.ts	100.00% <ø> (ø)
packages/server/src/server.ts	73.46% <100.00%> (+0.55%)	⬆️
packages/relay/src/lib/hedera.ts	92.00% <92.00%> (ø)
packages/server/src/routes/hederaRoutes.ts	66.66% <66.66%> (ø)
packages/server/src/utils.ts	78.12% <33.33%> (-4.64%)	⬇️

... and 1 file with indirect coverage changes

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[quiet-node]

Nice work but left some Qs

[Ferparishuertas]

LGTM

[quiet-node]

Perfecto! LGTM Great work as always!

[quiet-node]

@natanasow we should update the PR title though it's misleading.

[natanasow]

@natanasow we should update the PR title though it's misleading.

Fixed 🫡.