[Feature]: Add raw requestContact string

[grotor1]

I want to validate requestContact data separately. Vanilla telegram sdk gives not only object but string same as in initData.raw, and when i validating it on backend hashes are same.

I tried to manually concat string from this sdk contact object but keys order in contact object is different from original in vanilla sdk.

1. Contact object from this sdk

2. Manually concated string 3. Response from vanilla sdk

Describe the solution you'd like

Either preserve keys order so i can concat it manually, or keep original raw string in result object

Describe alternatives you've considered

No response

Additional context

No response

[heyqbnk]

Yeah, seems like a problem. Will work on it the next week

[heyqbnk]

Use requestContactComplete