Create Submissions & Mapfixes Protobufs (#12)

AOR Roblox servers will talk to game-rpc which will use these protobufs to talk to maps-service.

Reviewed-on: #12
Co-authored-by: Rhys Lloyd <krakow20@gmail.com>
Co-committed-by: Rhys Lloyd <krakow20@gmail.com>

submissions.proto

@@ -0,0 +1,80 @@
+syntax = "proto3";
+
+package submissions;
+
+option go_package = "git.itzana.me/strafesnet/go-grpc/submissions";
+
+service SubmissionsService {
+  rpc Get(SubmissionId) returns (SubmissionResponse);
+  rpc GetList(SubmissionIdList) returns (SubmissionList);
+  rpc List(ListRequest) returns (SubmissionList);
+}
+
+message SubmissionIdList {
+  repeated int64 ID = 1;
+}
+
+message SubmissionId {
+  int64 ID = 1;
+}
+
+enum SubmissionStatus {
+  // Phase: Creation
+  SubmissionStatusUnderConstruction = 0;
+  SubmissionStatusChangesRequested = 1;
+
+  // Phase: Review
+  SubmissionStatusSubmitting = 2;
+  SubmissionStatusSubmitted = 3;
+
+  // Phase: Testing
+  SubmissionStatusAcceptedUnvalidated = 4; // pending script review, can re-trigger validation
+  SubmissionStatusValidating = 5;
+  SubmissionStatusValidated = 6;
+  SubmissionStatusUploading = 7;
+  SubmissionStatusUploaded = 8; // uploaded to the group, but pending release
+
+  // Phase: Final SubmissionStatus
+  SubmissionStatusRejected = 9;
+  SubmissionStatusReleased = 10;
+}
+
+message SubmissionResponse {
+  int64 ID = 1;
+  string DisplayName = 2;
+  string Creator = 3;
+  uint32 GameID = 4;
+  int64 CreatedAt = 7;
+  int64 UpdatedAt = 8;
+  uint64 Submitter = 9;
+  uint64 AssetID = 10;
+  uint64 AssetVersion = 11;
+  uint64 ValidatedAssetID = 12;
+  uint64 ValidatedAssetVersion = 13;
+  uint64 UploadedAssetID = 14;
+  SubmissionStatus StatusID = 15;
+}
+
+message SubmissionFilter {
+  optional SubmissionStatus StatusID = 1;
+  optional string DisplayName = 2;
+  optional string Creator = 3;
+  optional uint32 GameID = 4;
+  optional uint64 Submitter = 5;
+}
+
+message SubmissionList {
+  repeated SubmissionResponse Submissions = 1;
+}
+
+message ListRequest {
+  SubmissionFilter Filter = 1;
+  Pagination Page = 2;
+}
+
+message Pagination {
+  uint32 Size = 1;
+  uint32 Number = 2;
+}
+
+message NullResponse {}