chore(gas-report): update to use --json output for gas-report

.gas-report.json

@@ -0,0 +1,34 @@
+[
+   {
+      "contract" : "script/Deploy.s.sol:Deploy",
+      "deployment" : {
+         "gas" : 416048,
+         "size" : 2733
+      },
+      "functions" : {
+         "run()" : {
+            "calls" : 1,
+            "max" : 245006,
+            "mean" : 245006,
+            "median" : 245006,
+            "min" : 245006
+         }
+      }
+   },
+   {
+      "contract" : "src/Foo.sol:Foo",
+      "deployment" : {
+         "gas" : 0,
+         "size" : 0
+      },
+      "functions" : {
+         "id(uint256)" : {
+            "calls" : 1,
+            "max" : 235,
+            "mean" : 235,
+            "median" : 235,
+            "min" : 235
+         }
+      }
+   }
+]

package.json

@@ -28,8 +28,8 @@
     "lint:sol": "forge fmt --check && pnpm solhint {script,src,test,certora}/**/*.sol",
     "prettier:check": "prettier --check **/*.{json,md,yml} --ignore-path=.prettierignore",
     "prettier:write": "prettier --write **/*.{json,md,yml} --ignore-path=.prettierignore",
-    "gas-report": "forge snapshot --gas-report 2>&1 | (tee /dev/tty | awk '/Suite result:/ {found=1; buffer=\"\"; next} found && !/Ran/ {buffer=buffer $0 ORS} /Ran/ {found=0} END {printf \"%s\", buffer}' > .gas-report)",
+    "gas-report": "forge snapshot --gas-report --json | tee .gas-report.tmp | awk 'NR<2' | json_pp > .gas-report.json && tail +4 .gas-report.tmp && rm .gas-report.tmp",
     "release": "commit-and-tag-version",
     "adorno": "pnpm prettier:write && forge fmt && pnpm gas-report"
   }
-}
+}