Merge pull request #89 from AztecProtocol/lh/solhint-func-param-name-mixedcase

feat: Add func-param-name-mixedcase rule

Author: benesjan

.solhint.json

@@ -11,6 +11,7 @@
     "private-func-leading-underscore": ["warn"],
     "private-vars-no-leading-underscore": ["warn"],
     "func-param-name-leading-underscore": ["warn"],
+    "func-param-name-mixedcase": ["warn"],
     "custom-error-over-require": ["warn"]
   }
 }