feat : implement the quick pay screen

src/app/OTPGenerator.ts

@@ -0,0 +1,10 @@
+export function generateOTP(length: number) {
+    const digits = '0123456789';
+    let otp = '';
+    otp += digits[Math.floor(Math.random() * 9)+1]; //first digit cannot be zero
+    for (let i = 1; i < length; i++) {
+        otp += digits[Math.floor(Math.random() * digits.length)];
+    }
+    // console.log("OTP generate :",otp);
+    return otp;
+}