Add help in ja

update version

Add plugin key map

modify readme

Import completion

* Add navto command client

* (wip) navto func

* Add search command

* wip

* move import functions

* Replace identifier

* add import command

* Add docs

* wip

* refactor

* Move test files

* Modify runner

* Add test

* Add cache to external-check

* Add getImportDeclarations test

* Modify runner

* Add doc

Update readme

update ver

Fix test for geterrProject

prepare release v0.4.6

Update dependency for TypeScript