Adds changes to schema for altering user profile image

src/operations/user.gql

@@ -0,0 +1,20 @@
+mutation getProfileImageUploadLink($fileExt: String = ".png") {
+  getProfileImageUploadLink(fileExt: $fileExt) {
+    uploadUrl
+    headers {
+      key
+      value
+    }
+  }
+}
+
+mutation editProfileImageUri($profileImageUri: String!) {
+  editProfileImageUri(profileImageUri: $profileImageUri) {
+    id
+    firebaseUid
+    username
+    profileImageUri
+    createdAt
+    updatedAt
+  }
+}