feat(compass): migrate from PGV to buf protovalidate (#460)

- Switch compass proto validation from envoyproxy/protoc-gen-validate
  to buf/protovalidate (buf.build/bufbuild/protovalidate)
- Convert all (validate.rules) annotations to (buf.validate.field)
- Remove standalone ignore_empty annotations (no-op without constraints)
- Remove misplaced code generation plugin deps from buf.yaml
  (connectrpc/es and connectrpc/connect-query are plugins, not proto modules)
- Update buf.lock with new dependency resolution

Author: ravisuhag

buf.lock

@@ -1,18 +1,23 @@
 # Generated by buf. DO NOT EDIT.
 version: v1
 deps:
+  - remote: buf.build
+    owner: bufbuild
+    repository: protovalidate
+    commit: 80ab13bee0bf4272b6161a72bf7034e0
+    digest: shake256:2d64e8ff856e1bf78a1289c24e868bdbe1ee2196f32b10bfe6ad8a743c7db99ba4be1a75c21d9f865ffa28464e11d339365b0f7937c75f7b308b3d5993cefd25
   - remote: buf.build
     owner: envoyproxy
     repository: protoc-gen-validate
-    commit: 6607b10f00ed4a3d98f906807131c44a
-    digest: shake256:acc7b2ededb2f88d296862943a003b157bdb68ec93ed13dcd8566b2d06e47993ea6daf12013b9655658aaf6bbdb141cf65bfe400ce2870f4654b0a5b45e57c09
+    commit: daf171c6cdb54629b5f51e345a79e4dd
+    digest: shake256:4ae167d7eed10da5f83a3f5df8c670d249170f11b1f2fd19afda06be2cff4d47dcc95e9e4a15151ecc8ce2d3d3614caf9a04d3ad82fb768a3870dedfa9455f36
   - remote: buf.build
     owner: googleapis
     repository: googleapis
-    commit: cc916c31859748a68fd229a3c8d7a2e8
-    digest: shake256:469b049d0eb04203d5272062636c078decefc96fec69739159c25d85349c50c34c7706918a8b216c5c27f76939df48452148cff8c5c3ae77fa6ba5c25c1b8bf8
+    commit: 536964a08a534d51b8f30f2d6751f1f9
+    digest: shake256:b6d518a50df43704333587967830344b49247ac8cf0953847d710f2d72246f677aeba56593dcd78f9199afff8ae9498f8dd5efe54107e5a09c60fff872456ca9
   - remote: buf.build
     owner: grpc-ecosystem
     repository: grpc-gateway
-    commit: a1ecdc58eccd49aa8bea2a7a9022dc27
-    digest: shake256:efdd86fbdc42e8b7259fe461a49656827a03fb7cba0b3b9eb622ca10654ec6beccb9a051229c1553ccd89ed3e95d69ad4d7c799f1da3f3f1bd447b7947a4893e
+    commit: 6467306b4f624747aaf6266762ee7a1c
+    digest: shake256:833d648b99b9d2c18b6882ef41aaeb113e76fc38de20dda810c588d133846e6593b4da71b388bcd921b1c7ab41c7acf8f106663d7301ae9e82ceab22cf64b1b7

buf.yaml

@@ -4,8 +4,7 @@ deps:
   - buf.build/googleapis/googleapis
   - buf.build/grpc-ecosystem/grpc-gateway
   - buf.build/envoyproxy/protoc-gen-validate
-  - buf.build/connectrpc/es
-  - buf.build/connectrpc/connect-query
+  - buf.build/bufbuild/protovalidate
 breaking:
   use:
     - WIRE