feat: added support for batch request feature to WS server (#2461)

[quiet-node]

Description:

• adds support for batch request feature to WS server
• adds WS neccessary config variables to configurations.md
• added two new predefined errors, WS_BATCH_REQUESTS_DISABLED and WS_BATCH_REQUESTS_AMOUNT_MAX_EXCEEDED, to JsonRpcError object
• added e2e tests to cover the new feature

Todo: https://github.com/hashgraph/hedera-json-rpc-relay/issues/2474

Fixes #2461

Result

• wscat:

• postman

Notes for reviewer:

Checklist

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

[github-actions[bot]]

Tests

    2 files  147 suites   13s :stopwatch: 819 tests 818 :heavy_check_mark: 1 :zzz: 0 :x: 831 runs  830 :heavy_check_mark: 1 :zzz: 0 :x:

Results for commit 6d5da4e3.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Acceptance Tests

  18 files  271 suites   23m 53s :stopwatch: 583 tests 577 :heavy_check_mark: 3 :zzz: 3 :x: 967 runs  953 :heavy_check_mark: 9 :zzz: 5 :x:

Results for commit 6d5da4e3.

:recycle: This comment has been updated with latest results.

[sonarqubecloud[bot]]

Quality Gate passed

Issues
4 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud