refactor!: move to single jar

Author: strantalis

.gitignore

@@ -1,4 +1,5 @@
-protocol/src/main/protogen
+src/main/java/grpc
+src/main/java/io/opentdf/platform/proto
 /.idea/
 target/
 .vscode/

buf.gen.yaml

@@ -2,13 +2,13 @@ version: v1
 managed:
   enabled: true
   java_package_prefix:
-    default: io.opentdf.platform
+    default: io.opentdf.platform.proto
     except:
       - buf.build/bufbuild/protovalidate
       - buf.build/googleapis/googleapis
       - buf.build/grpc-ecosystem/grpc-gateway
 plugins:
   - plugin: buf.build/protocolbuffers/java:v25.3
-    out: protocol/src/main/protogen
+    out: src/main/java
   - plugin: buf.build/grpc/java:v1.61.1
-    out: protocol/src/main/protogen
+    out: src/main/java