move admin js to own file

static/js/admin.js

@@ -0,0 +1,81 @@
+window.app = Vue.createApp({
+    el: "#vue",
+    mixins: [windowMixin],
+    delimiters: ["${", "}"],
+    data: function () {
+      return {
+        entries: [],
+        columns: [
+          {
+            name: "key",
+            required: true,
+            label: "Key",
+            align: "left",
+            field: (row) => row.key,
+            sortable: true,
+          },
+          {
+            name: "value",
+            required: true,
+            label: "Value",
+            align: "left",
+            field: (row) => row.value,
+            sortable: true,
+          },
+        ],
+      };
+    },
+
+    methods: {
+      fetchConfig() {
+        this.entries = [];
+        LNbits.api
+          .request(
+            "GET",
+            "/nwcprovider/api/v1/config",
+            this.g.user.wallets[0].adminkey,
+          )
+          .then((response) => {
+            const newEntries = [];
+            for (const [key, value] of Object.entries(response.data)) {
+              newEntries.push({
+                key: key,
+                value: value,
+              });
+            }
+
+            this.entries = newEntries;
+          })
+          .catch(function (error) {
+            console.error("Error fetching config:", error);
+          });
+      },
+      async saveConfig() {
+        const data = {};
+        for (const entry of this.entries) {
+          data[entry.key] = entry.value;
+        }
+        try {
+          const response = await LNbits.api.request(
+            "POST",
+            "/nwcprovider/api/v1/config",
+            this.g.user.wallets[0].adminkey,
+            data,
+          );
+          this.$q.notify({
+            message: "Config saved, please restart the server",
+            color: "positive",
+            position: "top",
+            timeout: 2000,
+            actions: [{ icon: "close", color: "white" }],
+          });
+        } catch (error) {
+          console.error("Error saving config:", error);
+        }
+      },
+    },
+
+    created: function () {
+      this.fetchConfig();
+    },
+  });