cli: denotests keyfile mock file (ref. #66)

__denotests__/mocks/keyfile.json

@@ -0,0 +1,25 @@
+{
+  "publicKey": {
+    "kty": "EC",
+    "crv": "P-384",
+    "alg": "ES384",
+    "x": "rrFawYTuFo8ZjoDxaztUU-c_RAwjw1Y9Tp3j4nH4WsY2Zlizf40Mvz_0BUkVVZCw",
+    "y": "HaFct6PVK2CQ7ZT2SHClnN-knmGfjY_DFwc6qrAu1s0DFZ8fEUuNdmkTlj9T4NQw",
+    "key_ops": [
+      "verify"
+    ],
+    "ext": true
+  },
+  "privateKey": {
+    "kty": "EC",
+    "crv": "P-384",
+    "alg": "ES384",
+    "x": "rrFawYTuFo8ZjoDxaztUU-c_RAwjw1Y9Tp3j4nH4WsY2Zlizf40Mvz_0BUkVVZCw",
+    "y": "HaFct6PVK2CQ7ZT2SHClnN-knmGfjY_DFwc6qrAu1s0DFZ8fEUuNdmkTlj9T4NQw",
+    "d": "zNpKLEqrWozLwaxlxnEa8njDLVQbwfHxX0OBNqB0jDl5qLLDcYF9NtHtXGzUWF5r",
+    "key_ops": [
+      "sign"
+    ],
+    "ext": true
+  }
+}