00330 grpc-encoding does not support all valid encodings for identity

[rbair23]

Added support for additional variations of "identity" as valid encodings. Compared with the Go gRPC server for behavior. Added tests to cover these various scenarios.

[github-actions]

JUnit Test Report

   67 files  ± 0     67 suites  ±0   2m 34s ⏱️ -3s
1 265 tests +17  1 262 ✅ +19   3 💤  - 2  0 ❌ ±0 
7 120 runs  +17  7 101 ✅ +19  19 💤  - 2  0 ❌ ±0 

Results for commit 499d03f. ± Comparison against base commit 4b22019.

This pull request removes 2 and adds 18 tests. Note that renamed tests count towards both.

, 1
com.hedera.pbj.runtime.Utf8ToolsTest ‑ [4] 

com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [10] identity, deflate;q=0.5, gzip;q=0.1, br;q=0.1
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [1] gzip
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [1] identity
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [2] compress
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [2] identity;q=0.5
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [3] deflate
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [3] identity;
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [4] br
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [4] identity;nonsense
com.hedera.pbj.grpc.helidon.PbjProtocolHandlerTest ‑ [5] gzip, deflate;q=0.5, identity;q=0.1
…

[github-actions]

Integration Test Report

    297 files  ±0      297 suites  ±0   8m 34s ⏱️ ±0s
104 157 tests ±0  104 157 ✅ ±0  0 💤 ±0  0 ❌ ±0 
104 385 runs  ±0  104 385 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 499d03f. ± Comparison against base commit 4b22019.