Initial QSfera import

Server/protogen/proto/qsfera/services/thumbnails/v0/thumbnails.proto

@@ -0,0 +1,66 @@
+syntax = "proto3";
+
+package qsfera.services.thumbnails.v0;
+
+option go_package = "github.com/qsfera/server/protogen/gen/qsfera/services/thumbnails/v0";
+
+import "qsfera/messages/thumbnails/v0/thumbnails.proto";
+import "protoc-gen-openapiv2/options/annotations.proto";
+
+option (grpc.gateway.protoc_gen_openapiv2.options.openapiv2_swagger) = {
+  info: {
+    title: "КуСфера thumbnails";
+    version: "1.0.0";
+    contact: {
+      name: "КуСфера";
+      url: "";
+      email: "";
+    };
+    license: {
+      name: "Apache-2.0";
+      url: "";
+    };
+  };
+  schemes: HTTP;
+  schemes: HTTPS;
+  consumes: "application/json";
+  produces: "application/json";
+  external_docs: {
+    description: "Developer Manual";
+    url: "";
+  };
+};
+
+// A Service for handling thumbnail generation
+service ThumbnailService {
+    // Generates the thumbnail and returns it.
+    rpc GetThumbnail(GetThumbnailRequest) returns (GetThumbnailResponse);
+}
+
+// A request to retrieve a thumbnail
+message GetThumbnailRequest {
+    // The path to the source image
+    string filepath = 1;
+    // The type to which the thumbnail should get encoded to.
+    qsfera.messages.thumbnails.v0.ThumbnailType thumbnail_type = 2;
+    // The width of the thumbnail
+    int32 width = 3;
+    // The height of the thumbnail
+    int32 height = 4;
+    // Indicates which image processor to use
+    string processor = 5;
+    oneof source {
+      qsfera.messages.thumbnails.v0.WebdavSource webdav_source = 6;
+      qsfera.messages.thumbnails.v0.CS3Source cs3_source = 7;
+    }
+}
+
+// The service response
+message GetThumbnailResponse {
+    // The endpoint where the thumbnail can be downloaded.
+    string data_endpoint = 1;
+    // The transfer token to be able to download the thumbnail.
+    string transfer_token = 2;
+    // The mimetype of the thumbnail
+    string mimetype = 3;
+}