Add meiliserach server support

Fix GalleryMetadata contains escaped html data

scripts/gen_meili_server_key.ts

@@ -0,0 +1,34 @@
+import { MeiliSearch } from "meilisearch";
+
+async function gen_key(host: string, master_key: string) {
+    const client = new MeiliSearch({ host, apiKey: master_key });
+    const key = await client.createKey({
+        name: "eh_downloader_update_key",
+        description: "EH Downloader Update Key",
+        actions: ["*"],
+        indexes: ["gmeta"],
+        expiresAt: null,
+    });
+    console.log("Update Key: ", key.key);
+    const skey = await client.createKey({
+        name: "eh_downloader_search_key",
+        description: "EH Downloader Search Key",
+        actions: ["search"],
+        indexes: ["gmeta"],
+        expiresAt: null,
+    });
+    console.log("Search Key: ", skey.key);
+}
+
+function show_help() {
+    console.log("gen_meili_server_key <HOST> <MASTER_KEY>");
+}
+
+if (Deno.args.length < 2) {
+    show_help();
+    Deno.exit(0);
+}
+
+const host = Deno.args[0];
+const master_key = Deno.args[1];
+gen_key(host, master_key);