HDDS-5410. Improve protobuf compilation

[adoroszlai]

What changes were proposed in this pull request?

Several improvements in the build steps related to protobuf compilation.

1. Protobuf versioning:
   • Add new properties for the version of shaded dependencies coming from ratis-thirdparty.
   • Rename proto3.hadooprpc.protobuf.version to hadoop-thirdparty.protobuf.version. Add a corresponding property for the artifact name, because it includes the version number.
   • Apply these consistently when compiling proto files for Ratis and Hadoop, respectively (do not mix with grpc.protobuf-compile.version).
   • Add notes about having to sync these versions with the thirdparty components.
   • Rename grpc.protobuf-compile.version to protobuf3.version, only used for CSI after this change, for now. Bump it to 3.25.8.
   • Rename proto2.hadooprpc.protobuf.version to protobuf2.version, since it is not specific to Hadoop RPC.
   • Combine all protobuf version items in the *-version-info.properties files into a single property. Previously each of these properties required an accessor in VersionInfo, only to be concatenated in HddsVersionInfo and OzoneVersionInfo.
   • For modules with single execution of protobuf-maven-plugin: define protobuf version being used in a property.
2. Simplify and document steps for using shaded protobuf in the generated code, including:
   • Output directory for each execution of protobuf-maven-plugin is automatically added as source root (for compilation), so moving to the same dir at the end is unnecessary.
   • Separate output directories at the same level under generated-sources, instead of using a dir and its subdir (java and java/proto3). This allows using fewer <replace/> tasks.
3. Misc:
   • Improve protobuf-maven-plugin execution <id>:
     • unshaded: include protobuf version
     • shaded: add for-hadoop and for-ratis, respectively
   • Add protobuf-maven-plugin to pluginManagement.
   • Remove plugin parameters that had default values.
   • In ozone-csi: merge global plugin config into that of the execution.

https://issues.apache.org/jira/browse/HDDS-5410

How was this patch tested?

CI:
https://github.com/adoroszlai/ozone/actions/runs/18108412916
https://github.com/adoroszlai/ozone/actions/runs/18152046866

Maven output excerpt for execution <id> changes:

[INFO] --- protobuf:0.6.1:compile (compile-proto-for-ratis) @ hdds-interface-client ---
[INFO] Compiling 1 proto file(s) to hadoop-hdds/interface-client/target/generated-sources/proto-java-for-ratis
[INFO] 
[INFO] --- protobuf:0.6.1:compile-custom (compile-proto-for-ratis) @ hdds-interface-client ---
[INFO] Compiling 1 proto file(s) to hadoop-hdds/interface-client/target/generated-sources/proto-java-for-ratis
[INFO] 
[INFO] --- protobuf:0.6.1:compile (compile-proto-2.5.0) @ hdds-interface-client ---
[INFO] Compiling 2 proto file(s) to hadoop-hdds/interface-client/target/generated-sources/proto-java-for-protobuf-2.5.0
[INFO] 
[INFO] --- protobuf:0.6.1:compile (compile-proto-for-hadoop) @ hdds-interface-client ---
[INFO] Compiling 2 proto file(s) to hadoop-hdds/interface-client/target/generated-sources/proto-java-for-hadoop

$ ozone version
...
Compiled with protoc 2.5.0, 3.25.8, 3.25.5 (Hadoop), 3.25.5 (Ratis)
...

[sodonnel]

LGTM

[adoroszlai]

Thanks @sodonnel for the review.