Add start of post-hiding by labels

src/lib/labeling/helpers.ts

@@ -0,0 +1,11 @@
+import {ComAtprotoLabelDefs} from '@atproto/api'
+import {LabelValGroup, LABEL_VAL_GROUPS} from './const'
+
+export function getLabelValueGroup(labelVal: string): LabelValGroup {
+  for (const id in LABEL_VAL_GROUPS) {
+    if (LABEL_VAL_GROUPS[id].values.includes(labelVal)) {
+      return LABEL_VAL_GROUPS[id]
+    }
+  }
+  return LABEL_VAL_GROUPS.unknown
+}