v1.0.5-p1 Better CBOR<->JSONB conversion

This is quite an important release for several reasons:

KOIOS Collaboration & CIP-88 Support

Our friends at KOIOS came up with the idea of implementing a function for convenient validation of key registration according to their proposed CIP-88 standard. This release owes its existence to that collaboration.

It has a rather unusual tag: v1.0.5-p1, where p1 stands for "phase 1". This is a full-fledged release, not a beta—it is simply divided into two phases.

• Phase 1 introduces the implementation of tools_verify_cip88_pool_key_registration as an SQL procedure that utilizes multiple calls to native code instead of a fully native implementation. Essentially, this is a prototype, but one that is production-ready and fully tested.
• Phase 2 (v1.0.5-p2) will provide the same functionality but as a purely native implementation, without changing the function signature. The only difference will be improved performance. 🚀

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CBOR<->JSONB Improvements

During development, we uncovered several inconsistencies in repeated CBOR<->JSONB serialization and deserialization, which have now been fixed. This makes the release not just important but also highly beneficial.

1. Enhanced CBOR->JSONB Encoder

   • The encoder now properly serializes bytea as hex-encoded rather than a hex-like string.
   • This makes CBOR output more compact.
   • It also aligns the serialization process with cardano-cli.

2. Fixing JSONB Bytearray Handling

   • JSONB does not have a native bytearray type; it is always passed as a hex-encoded string, which, in some cases, was still stored as text.
   • This limitation has been successfully worked around, making the handling more robust than ever.

3. New Function: cbor_decode_jsonb_hex2bytea

   • Correct encoding of bytea into CBOR is important, but so is correct decoding.
   • Instead of modifying the existing cbor_decode_jsonb function (which could introduce regressions for users), a new function, cbor_decode_jsonb_hex2bytea, was introduced to handle this properly.

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Release Notes:

1. Fixed the issue with \u{0} characters in property keys;
2. JSONB->CBOR conversion now follows the same rules as cardano-cli;
3. JSONB->CBOR conversion now correctly handles bytearray transfer between formats;
4. CBOR->JSONB conversion now allows handling bytearray transfer between formats with cbor_decode_jsonb_hex2bytea function;
5. Refactoring, lots of refactoring, and some optimizations;
6. Added a function tools_verify_cip88_pool_key_registration;
7. README.md update;
8. Tests update;
9. Migrations update;

Documentation - link
Installation/update guide - link