replace static roboto font with fontsource and add nunito font

package.json

@@ -13,6 +13,8 @@
 		"format": "prettier --write ."
 	},
 	"devDependencies": {
+		"@fontsource/nunito": "^5.0.20",
+		"@fontsource/roboto": "^5.0.15",
 		"@sveltejs/adapter-node": "^5.2.2",
 		"@sveltejs/kit": "^2.5.26",
 		"@types/bcrypt": "^5.0.2",