Strath/wasm legacy v4

[StrathCole]

Summary of changes

This pull request introduces translation logic for legacy metadata values in the WASM store, ensuring compatibility between old and new key formats. It also adds comprehensive tests to verify the translation of legacy code and contract information, and updates a dependency version.

Translation logic for legacy metadata values:

• Added the translateLegacyValueForKey, translateLegacyCodeInfoValue, and translateLegacyContractInfoValue functions to legacy_store.go to translate legacy code and contract info values to the new format when accessing via new keys. (custom/wasm/legacy_store.go)
• Updated the Get method and iterator logic in legacyWasmStore to utilize the translation functions, ensuring values returned for new keys are in the expected format. (custom/wasm/legacy_store.go) [1] [2]

Testing legacy translation:

• Added tests TestLegacyStore_TranslatesLegacyMetadataValues and TestLegacyStore_IteratorTranslatesLegacyMetadataValues to verify correct translation of legacy contract and code info values in both direct Get calls and iteration scenarios. (custom/wasm/query_handler_test.go)

Dependency update:

• Updated github.com/cometbft/cometbft dependency from version v0.37.16 to v0.37.18 in go.mod. (go.mod)

Imports:

• Added necessary imports for wasmtypes and legacytypes in both implementation and test files to support translation and testing. (custom/wasm/legacy_store.go, custom/wasm/query_handler_test.go) [1] [2]