feat: replace xerrors with standard Go error handling

[basgys]

What changed? Why?

Removed the dependency on golang.org/x/xerrors throughout the codebase and refactored error handling to use the standard fmt.Errorf function with the %w verb for error wrapping, in combination with Go's built-in errors package for unwrapping and type assertion.

There were 3 errors incorrectly formatted. Now that standard packages are used, go vet can detect them easily.

Why xerrors is no longer needed

Since Go 1.13, the language has supported native error wrapping with fmt.Errorf("...: %w", err), and since Go 1.20, the built-in error handling tools are mature enough to fully replace xerrors. The key improvements include:

• Native error wrapping: fmt.Errorf with %w wraps errors effectively, allowing use of errors.Is and errors.As to inspect wrapped errors, matching the functionality xerrors previously offered.
• Improved error formatting: Go 1.20 enhances error formatting, providing multi-line stack traces with %+v when needed, eliminating the need for xerrors' custom formatting.
• Simplified dependencies: Removing xerrors reduces external dependencies, improving maintainability and compatibility with future Go updates.
• Tooling: Benefit from all the standard tooling (e.g. lint)

How did you test the change?

• unit test
• integration test
• functional test
• adhoc test (described below)

[cb-heimdall]

🟡 Heimdall Review Status

Requirement	Status	More Info
Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 1 Sum 2

[basgys]

Errors detected before this patch:

go vet -printfuncs=wrapf,statusf,warnf,infof,debugf,failf,equalf,containsf,fprintf,sprintf ./...
# github.com/coinbase/chainstorage/internal/blockchain/client/rosetta
# [github.com/coinbase/chainstorage/internal/blockchain/client/rosetta]
internal/blockchain/client/rosetta/rosetta.go:508:15: fmt.Errorf format %w has arg request of wrong type github.com/coinbase/rosetta-sdk-go/types.BlockRequest
# github.com/coinbase/chainstorage/internal/blockchain/parser/aptos
# [github.com/coinbase/chainstorage/internal/blockchain/parser/aptos]
internal/blockchain/parser/aptos/aptos_native.go:655:16: fmt.Errorf format %w has arg transactionInfo.Type of wrong type string
internal/blockchain/parser/aptos/aptos_native.go:900:16: fmt.Errorf format %w has arg wcType.Type of wrong type string