Add React Native snippets

snippets/react-native/lnurl_pay.ts

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+import {
+    InputTypeVariant,
+    parseInput,
+    payLnurl
+} from "@breeztech/react-native-breez-sdk"
+
+const exampleLnurlPay = async () => {
+    // ANCHOR: lnurl-pay
+    // Endpoint can also be of the
+    // lnurlp://domain.com/lnurl-pay?key=val
+    // lnurl1dp68gurn8ghj7mr0vdskc6r0wd6z7mrww4excttsv9un7um9wdekjmmw84jxywf5x43rvv35xgmr2enrxanr2cfcvsmnwe3jxcukvde48qukgdec89snwde3vfjxvepjxpjnjvtpxd3kvdnxx5crxwpjvyunsephsz36jf
+    const lnurlPayUrl = "lightning@address.com"
+
+    const input = await parseInput(lnurlPayUrl)
+    if (input.type === InputTypeVariant.LN_URL_PAY) {
+        const amountMsat = input.data.minSendable
+        const lnUrlPayResult = await payLnurl({
+            data: input.data,
+            amountMsat,
+            comment: "comment"
+        })
+    }
+    // ANCHOR_END: lnurl-pay
+}