serve: remove deadcode Signed-off-by: Koichi Shiraishi <zchee.io@gmail.com>

Support lsp 3.16 (#17) * codes: move to codes.go and romeve not JSON-RPC 2 specific codes * all: change int64 type to int32 for correspond to lsp 3.16

Makefile: minor fix 

all: remove gojay implemens 

module: upgrade to goccy/go-json@v0.3.4 and go.lsp.dev/pkg@b6310ac75a91 

all: sync to golang/tools@dcbf2a9ed15d 

jsonrpc2: remove debug logging 

ci/circleci: add check versions step 

all: change license author