Add support for Bech32 format of BTC and LTC

[j4nk0]

Add support for Litecoin testnet Q... addresses Add new currency litecoin-segwit for bech32 address format on mainnet ant testnet. Add new currency bitcoin-segwit for bech32 address format on mainnet ant testnet Add validator logic for validating bech32 addresses

[sourcery-ai[bot]]

Sourcery Code Quality Report

❌  Merging this PR will decrease code quality in the affected files by 0.01%.

Quality metrics	Before	After	Change
Complexity	1.93 ⭐	1.93 ⭐	0.00
Method Length	39.70 ⭐	40.64 ⭐	0.94 👎
Working memory	5.37 ⭐	5.34 ⭐	-0.03 👍
Quality	81.73% ⭐	81.72% ⭐	-0.01% 👎

Other metrics	Before	After	Change
Lines	223	242	19

Changed files	Quality Before	Quality After	Quality Change
coinaddr/currency.py	71.96% 🙂	70.09% 🙂	-1.87% 👎
coinaddr/validation.py	84.06% ⭐	84.84% ⭐	0.78% 👍
tests/test_validation.py	93.61% ⭐	93.48% ⭐	-0.13% 👎

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation

Legend and Explanation

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• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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[joeblackwaslike]

Thanks for opening this and being patient, I need a minute to review the code and preferably setup some CI/CD for the repo for QC.