Created Piped-instance.json (#217)

This .json file is made for fetching of instances by the Python Script as Currently the Piped Instances are updated only when the Extension updates. So, This would solve the problem.

src/instances/piped-instances.json

@@ -0,0 +1,18 @@
+{
+  "piped": {
+    "normal": [
+      "https://piped.kavin.rocks",
+      "https://piped.silkky.cloud",
+      "https://piped.tokhmi.xyz",
+      "https://piped.moomoo.me",
+      "https://il.ax",
+      "https://piped.syncpundit.com",
+      "https://piped.mha.fi",
+      "https://piped.mint.lgbt",
+      "https://piped.privacy.com.de",
+      "https://piped.notyourcomputer.net"
+    ],
+    "tor" : [
+      "http://piped2bbch4xslbl2ckr6k62q56kon56ffowxaqzy42ai22a4sash3ad.onion"
+    ]
+  }