feat: stakecore provider for songbird (#395)

Author: kuco23

bifrost-wallet.providerlist.json

@@ -1975,6 +1975,15 @@
       "logoURI": "https://raw.githubusercontent.com/TowoLabs/ftso-signal-providers/master/assets/0x27Cb5f4EbA81976617b75953053D33EF2002daDF.png",
       "listed": true
     },
+    {
+      "chainId": 19,
+      "name": "Stakecore",
+      "description": "An infrastructure provider that recognizes the importance of reliable data for an oracle-based chain.",
+      "url": "https://stakecore.org",
+      "address": "0x1e68DC808A240C096F0261144dc41fd4c883Cfb0",
+      "logoURI": "https://raw.githubusercontent.com/TowoLabs/ftso-signal-providers/master/assets/0x1e68DC808A240C096F0261144dc41fd4c883Cfb0.png",
+      "listed": true
+    },
     {
       "chainId": 14,
       "name": "Stakecore",