[BCFR-147][common] - Add codec chain agnostic modifier for converting byte array address to string

[Farber98]

Description

This PR introduces a chain-agnostic solution for transforming address byte arrays into string representations. To do so, it uses a modifier that supports chain-specific logic. The modifier is injected during relayer contractReader configuration.

Key Changes

• AddressModifier Interface: Provides an abstraction for encoding/decoding addresses across different chains. Will be implemented in each relayer with corresponding chain-specific logic.

type AddressModifier interface {
    EncodeAddress([]byte) (string, error)
    DecodeAddress(string) ([]byte, error)
    Length() int
}

• AddressBytesToStringModifierConfig: This config struct skips the modifier in JSON serialization to avoid serialization issues and it will be injected later.

type AddressBytesToStringModifierConfig struct {
    Fields   []string
    Modifier AddressModifier `json:"-"` 
}

Resources

• BCFR-147

Related PRs

• https://github.com/smartcontractkit/chainlink-solana/pull/875
• https://github.com/smartcontractkit/chainlink/pull/14620

core ref: bcfr-147-add-address-to-string-modifier solana ref: bcfr-147-add-address-to-string-modifier