Initial QSfera import

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

@@ -0,0 +1,30 @@
+syntax = "proto3";
+
+package qsfera.messages.thumbnails.v0;
+
+option go_package = "github.com/qsfera/server/protogen/gen/qsfera/messages/thumbnails/v0";
+
+message WebdavSource {
+    // REQUIRED.
+    string url = 1;
+    // REQUIRED.
+    bool is_public_link = 2;
+    // OPTIONAL.
+    string webdav_authorization = 3;
+    // OPTIONAL.
+    string reva_authorization = 4;
+    // OPTIONAL.
+    string public_link_token = 5;
+}
+
+message CS3Source {
+    string path = 1;
+    string authorization = 2;
+}
+
+// The file types to which the thumbnail can be encoded to.
+enum ThumbnailType {
+        PNG = 0; // Represents PNG type
+        JPG = 1; // Represents JPG type
+        GIF = 2; // Represents GIF type
+}