Add "anins1der.is-a.dev" (CNAMEd to GitHub Pages) and Discord's TXT record verifier thing

domains/_discord.anins1der.json

@@ -0,0 +1,8 @@
+{
+  "owner": {
+    "username": "backups1der"
+  },
+  "records": {
+    "TXT": "dh=f7924d3eeee4cad4adba88ffbf360efe1a9a9865"
+  }
+}

domains/anins1der.json

@@ -0,0 +1,8 @@
+{
+  "owner": {
+    "username": "backups1der"
+  },
+  "records": {
+    "CNAME": "https://backups1der.github.io"
+  }
+}