feat: Add OPERATOR tier

[victor-yanev]

Description:

Instead of tracking the remaining total budget in-memory inside HbarLimitService (we would have to divide it by the number of Kubernetes instances, etc - it is creating unnecessary complexity in the configurations), we could create a new subscription tier (SubscriptionTier.OPERATOR) and add a pre-configured spending plan in the JSON configuration file which links the EVM address(es) of the relay operator account(s) to it.

In this way we can only set the total limit for the OPERATOR tier to HBAR_RATE_LIMIT_TINYBAR and it will be shared by all instances of the relay.

Related issue(s):

Fixes #3099

Notes for reviewer:

Checklist

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

[github-actions]

Test Results

 22 files  +  1  301 suites   - 14   41m 49s ⏱️ - 4m 44s
611 tests +  4  600 ✅ +  2  4 💤 ±0  7 ❌ +2 
801 runs  +107  787 ✅ +108  6 💤 +2  8 ❌  - 3 

For more details on these failures, see this check.

Results for commit db14ad6. ± Comparison against base commit c006489.

This pull request removes 1 and adds 5 tests. Note that renamed tests count towards both.

"before all" hook in "@precompile-calls Tests for eth_call with HTS" ‑ RPC Server Acceptance Tests Acceptance tests @precompile-calls Tests for eth_call with HTS "before all" hook in "@precompile-calls Tests for eth_call with HTS"

"before all" hook in "@web-socket-batch-3 eth_subscribe newHeads" ‑ RPC Server Acceptance Tests Acceptance tests @web-socket-batch-3 eth_subscribe newHeads "before all" hook in "@web-socket-batch-3 eth_subscribe newHeads"
calls createFungibleToken with custom fees ‑ RPC Server Acceptance Tests Acceptance tests @precompile-calls Tests for eth_call with HTS Create HTS token via direct call to Hedera Token service calls createFungibleToken with custom fees
calls createFungibleToken ‑ RPC Server Acceptance Tests Acceptance tests @precompile-calls Tests for eth_call with HTS Create HTS token via direct call to Hedera Token service calls createFungibleToken
calls createNonFungibleToken with fees ‑ RPC Server Acceptance Tests Acceptance tests @precompile-calls Tests for eth_call with HTS Create HTS token via direct call to Hedera Token service calls createNonFungibleToken with fees
calls createNonFungibleToken ‑ RPC Server Acceptance Tests Acceptance tests @precompile-calls Tests for eth_call with HTS Create HTS token via direct call to Hedera Token service calls createNonFungibleToken

♻️ This comment has been updated with latest results.

[konstantinabl]

lgtm! but please fix the failing tests in CI

[Nana-EC]

Nice work.
Some suggestions and questions

[quiet-node]

Good work some questions!

[sonarqubecloud]

Quality Gate failed

Failed conditions
4.3% Duplication on New Code (required ≤ 3%)

See analysis details on SonarQube Cloud

[quiet-node]

Just couple of Qs otherwise everything LGTM! Great work! 🚀

[codecov]

Codecov Report

Attention: Patch coverage is 88.00000% with 6 lines in your changes missing coverage. Please review.

Project coverage is 85.05%. Comparing base (c006489) to head (db14ad6).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/relay/src/lib/services/hbarLimitService/index.ts	89.74%	3 Missing and 1 partial ⚠️
packages/relay/src/lib/relay.ts	50.00%	0 Missing and 1 partial ⚠️
.../relay/src/lib/services/hapiService/hapiService.ts	87.50%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3316      +/-   ##
==========================================
+ Coverage   84.79%   85.05%   +0.25%     
==========================================
  Files          69       69              
  Lines        4637     4683      +46     
  Branches     1041     1048       +7     
==========================================
+ Hits         3932     3983      +51     
+ Misses        398      391       -7     
- Partials      307      309       +2     

Flag	Coverage Δ
config-service	98.14% <ø> (ø)
relay	79.72% <84.00%> (+0.99%)	⬆️
server	83.28% <ø> (ø)
ws-server	36.66% <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)
...y/src/lib/db/types/hbarLimiter/subscriptionTier.ts	100.00% <100.00%> (ø)
packages/relay/src/lib/relay.ts	91.54% <50.00%> (-1.31%)	⬇️
.../relay/src/lib/services/hapiService/hapiService.ts	79.78% <87.50%> (-0.65%)	⬇️
...s/relay/src/lib/services/hbarLimitService/index.ts	93.16% <89.74%> (+0.46%)	⬆️

... and 7 files with indirect coverage changes