feat: add twrnc for runtime Tailwind styling

Replace Tamagui dependencies with twrnc, a runtime Tailwind CSS
utility library for React Native.

Co-authored-by: Ona <no-reply@ona.com>

package.json

@@ -13,6 +13,9 @@
 		"format": "oxfmt --write .",
 		"format:check": "oxfmt --check ."
 	},
+	"dependencies": {
+		"twrnc": "^4.16.0"
+	},
 	"devDependencies": {
 		"@types/bun": "latest",
 		"oxfmt": "^0.24.0",