feat: platform parameter added

Signed-off-by: Gaurav Goel <[email protected]>

Author: grvgoel81

core/src/main/java/com/web3auth/core/Web3Auth.kt

@@ -164,7 +164,10 @@ class Web3Auth(web3AuthOptions: Web3AuthOptions, context: Context) : WebViewResu
         val loginIdCf = getLoginId(sessionId, paramsString)
         loginIdCf.whenComplete { loginId, error ->
             if (error == null) {
-                val jsonObject = mapOf("loginId" to loginId)
+                val jsonObject = mapOf(
+                    "loginId" to loginId,
+                    "platform" to "android"
+                )
 
                 val hash = "b64Params=" + gson.toJson(jsonObject).toByteArray(Charsets.UTF_8)
                     .toBase64URLString()