Imports of package protocol

PathSynopsis
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
golang.org/x/tools/internal/mcp/jsonschemaPackage jsonschema is an implementation of the [JSON Schema specification], a JSON-based format for describing the structure of JSON data.