full segwit support

[shamardy]

fixes #826

• Migrate parity-bitcoin to mm2
• Add segwit address lib to bitcoin library
• Add full_segwit param to enable/electrum
• Add segwit p2wpkh addresses support to my_balance method
• Add segwit p2wpkh support to withdraw method
• Add p2wsh support
• Add segwit support for atomic swaps spending transactions

[artemii235]

Thanks for the PR! I have few minor remarks and a very important note for future implementation iterations 🙂

[shamardy]

For now whats added to the electrum request is

"address_format": {
   "format": "segwit"
}

when supporting p2wsh in the next iteration I will change it to

"address_format": {
   "format": "segwit",
   "subtype": P2SH | P2WPKH | P2WSH
}

by adding

#[serde(tag = "format")]
pub enum UtxoAddressFormat {
    Standard,
    Segwit  { subtype: String },
    CashAddress { network: String },
}

[artemii235]

Great 🔥

[artemii235]

@sergeyboyko0791 Please take a look too 🙂

[artemii235]

@shamardy 2 minor final notes 🙂

1. Please fix the git conflict.
2. Segwit { subtype: String } as the subtype has only a few possible values an enum seems a better replacement of String.

[shamardy]

Yeah, already have the enum here
https://github.com/KomodoPlatform/atomicDEX-API/blob/2297d48b13e746c5d749444cc392d771e74d2b3d/mm2src/mm2_bitcoin/keys/src/segwitaddress.rs#L55
will change its name, use it and add more types to it if needed 👌

[sergeyboyko0791]

Looks good! I don't have comments :)