CWBI-21013: Convert Sites Modal to Use RHF, Yup, and USWDS libraries (#…

…118)

* convert sites modal to use react-hook-form and uswds components

* finish converting sites modal logic to use react hook form, yup schema, and uswds components

* update sites list and filters while I'm at it

* update site list filters section

* add loading overlay for pulling sites list data

.eslintrc.json

@@ -17,6 +17,7 @@
     }
   },
   "plugins": ["react"],
+  "parser": "@typescript-eslint/parser",
   "rules": {
     "arrow-body-style": ["warn", "as-needed"],
     "arrow-parens": ["warn", "always"],