[Chronik] Add basic structs and consts for SLP and ALP txs

Summary:
We use a shared representation for both SLP and ALP, which simplifies the implementation of the verification etc.

This adds support to represent 5 token types:

• SLP V1 (fungible tokens): https://github.com/badger-cash/slp-specifications/blob/master/slp-token-type-1.md
• SLP V2 (mint vault tokens): https://github.com/badger-cash/slp-specifications/blob/master/slp-token-type-2.md
• SLP NFT1 Group and Child: https://github.com/badger-cash/slp-specifications/blob/master/slp-nft-1.md
• ALP V0: https://ecashbuilders.notion.site/ALP-a862a4130877448387373b9e6a93dd97

Depends on D15007.

Test Plan: cargo test -p bitcoinsuite-slp

Reviewers: Fabien, #bitcoin_abc

Reviewed By: Fabien, #bitcoin_abc

Differential Revision: https://reviews.bitcoinabc.org/D15011