fix: rewrite the label manager to no longer use useRef

useRef was causing a `readonly` error when trying to overwrite
`ref.current`. Rewrote components to use an Apollo query instead.

fixes #121

frontend/src/shared/graphql/labels.ts

@@ -0,0 +1,26 @@
+import gql from 'graphql-tag';
+import TASK_FRAGMENT from './fragments/task';
+
+const FIND_PROJECT_QUERY = gql`
+  query labels($projectID: UUID!) {
+    findProject(input: { projectID: $projectID }) {
+      labels {
+        id
+        createdDate
+        name
+        labelColor {
+          id
+          name
+          colorHex
+          position
+        }
+      }
+    }
+    labelColors {
+      id
+      position
+      colorHex
+      name
+    }
+  }
+`;