Add taproot support

[nerolation]

Add Bech32m encoding/decoding for taproot addresses. The decoding was written by Pieter Wuille here: https://github.com/Bytom/python-bytomlib/blob/master/pybtmsdk/segwit_addr.py

The check if a PkScript represents an Bech32m script is done in the following:

• The script must start with 0x01
• The second part of the script must result in a valid taproot address when encoded

Notably, the check for Taproot is the last check before a script would be classifies as unknown.

Everything was squashed into one commit.

[pep8speaks]

Hello @nerolation! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file blockchain_parser/address.py:

Line 70:13: E101 indentation contains mixed spaces and tabs
Line 70:13: W191 indentation contains tabs

• In the file blockchain_parser/script.py:

Line 113:80: E501 line too long (92 > 79 characters)

• In the file blockchain_parser/utils_taproot.py:

Line 140:80: E501 line too long (92 > 79 characters)

Comment last updated at 2022-03-05 09:05:08 UTC