[Glitch] Refactor <HashtagHeader> to TypeScript

Port 25387dc423 to glitch-soc

Signed-off-by: Claire <claire.github-309c@sitedethib.com>

app/javascript/flavours/glitch/api/tags.ts

@@ -0,0 +1,11 @@
+import { apiRequestPost, apiRequestGet } from 'flavours/glitch/api';
+import type { ApiHashtagJSON } from 'flavours/glitch/api_types/tags';
+
+export const apiGetTag = (tagId: string) =>
+  apiRequestGet<ApiHashtagJSON>(`v1/tags/${tagId}`);
+
+export const apiFollowTag = (tagId: string) =>
+  apiRequestPost<ApiHashtagJSON>(`v1/tags/${tagId}/follow`);
+
+export const apiUnfollowTag = (tagId: string) =>
+  apiRequestPost<ApiHashtagJSON>(`v1/tags/${tagId}/unfollow`);