Fix ABI usage

Author: shahthepro

src/abi/irm-adaptive-curve.abi.ts

@@ -0,0 +1,19 @@
+export const ABI_JSON = [
+    {
+        "type": "function",
+        "name": "rateAtTarget",
+        "inputs": [
+            {
+                "name": "id",
+                "type": "bytes32"
+            }
+        ],
+        "outputs": [
+            {
+                "name": "",
+                "type": "int256"
+            }
+        ],
+        "stateMutability": "view"
+    }
+] as const