Initialize Connect Append

curl --request POST \
  --url https://{projectId}.frontendapi.corbado.io/v2/connect/append/init \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "clientInformation": {
    "bluetoothAvailable": true,
    "clientEnvHandle": "<string>",
    "visitorId": "<string>",
    "canUsePasskeys": true,
    "isUserVerifyingPlatformAuthenticatorAvailable": true,
    "isConditionalMediationAvailable": true,
    "clientCapabilities": {
      "conditionalCreate": true,
      "conditionalMediation": true,
      "hybridTransport": true,
      "passkeyPlatformAuthenticator": true,
      "userVerifyingPlatformAuthenticator": true
    },
    "javaScriptHighEntropy": {
      "platform": "<string>",
      "platformVersion": "<string>",
      "mobile": true
    },
    "isNative": true,
    "webdriver": true,
    "privateMode": true,
    "clientEnvHandleMeta": {
      "ts": 123,
      "source": "ls"
    }
  },
  "flags": {},
  "invitationToken": "<string>"
}'

{
  "processID": "<string>",
  "newClientEnvHandle": "<string>",
  "expiresAt": 123,
  "frontendApiUrl": "<string>",
  "appendAllowed": true,
  "flags": {}
}