Add React Native snippets

snippets/react-native/lnurl_auth.ts

@@ -0,0 +1,25 @@
+import {
+    InputTypeVariant,
+    lnurlAuth,
+    LnUrlCallbackStatusVariant,
+    parseInput
+} from "@breeztech/react-native-breez-sdk"
+
+const exampleLnurlAuth = async () => {
+    // ANCHOR: lnurl-auth
+    // Endpoint can also be of the form:
+    // keyauth://domain.com/auth?key=val
+    const lnurlAuthUrl =
+        "lnurl1dp68gurn8ghj7mr0vdskc6r0wd6z7mrww4excttvdankjm3lw3skw0tvdankjm3xdvcn6vtp8q6n2dfsx5mrjwtrxdjnqvtzv56rzcnyv3jrxv3sxqmkyenrvv6kve3exv6nqdtyv43nqcmzvdsnvdrzx33rsenxx5unqc3cxgeqgntfgu"
+
+    const input = await parseInput(lnurlAuthUrl)
+    if (input.type === InputTypeVariant.LN_URL_AUTH) {
+        const result = await lnurlAuth(input.data)
+        if (result.type === LnUrlCallbackStatusVariant.OK) {
+            console.log("Successfully authenticated")
+        } else {
+            console.log("Failed to authenticate")
+        }
+    }
+    // ANCHOR_END: lnurl-auth
+}