Added peggy to dev dependencies

package.json

@@ -120,6 +120,7 @@
     "vanillajs-datepicker": "^1.1.4"
   },
   "devDependencies": {
+    "peggy": "^1.2.0",
     "electron": "12.0.10",
     "electron-builder": "^22.11.7",
     "eslint": "^7.25.0",

yarn.lock

@@ -2411,6 +2411,11 @@ path-key@^3.1.0:
   resolved "https://registry.yarnpkg.com/path-key/-/path-key-3.1.1.tgz#581f6ade658cbba65a0d3380de7753295054f375"
   integrity sha512-ojmeN0qd+y0jszEtoY48r0Peq5dwMEkIlCOu6Q5f41lfkswXuKtYrhgoTpLnyIcHm24Uhqx+5Tqm2InSwLhE6Q==
 
+peggy@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/peggy/-/peggy-1.2.0.tgz#657ba45900cbef1dc9f52356704bdbb193c2021c"
+  integrity sha512-PQ+NKpAobImfMprYQtc4Egmyi29bidRGEX0kKjCU5uuW09s0Cthwqhfy7mLkwcB4VcgacE5L/ZjruD/kOPCUUw==
+
 pend@~1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/pend/-/pend-1.2.0.tgz#7a57eb550a6783f9115331fcf4663d5c8e007a50"