chore: Convert example to TypeScript (#648)

ReactNativeFastImageExample/src/BulletText.tsx

@@ -0,0 +1,13 @@
+import React from 'react'
+import FeatureText from './FeatureText'
+
+interface BulletTextProps {
+    text?: string
+    children?: any
+}
+
+const BulletText = ({ text, children }: BulletTextProps) => (
+    <FeatureText text={`• ${text || children} •`} />
+)
+
+export default BulletText