feat: Support existing commands

[yutotnh]

単語認識に関係しそうで、まだ対応していないコマンドの一覧。
キーバンドで何もかいていないものはデフォルトでキーバンドがないやつ。
Descriptionはあとから気が向いたときに埋めていく。

Command	Keybinding for Windows and Linux	Keybinding for Mac	Command to be overwritten	Description
wordDivider.deleteInsideWord			deleteInsideWord
wordDivider.deleteWordEndLeft			deleteWordEndLeft
wordDivider.deleteWordEndRight			deleteWordEndRight
wordDivider.deleteWordPartLeft		⌃ ⌥ Backspace	deleteWordPartLeft
wordDivider.deleteWordPartRight		⌃ ⌥ Delete	deleteWordPartRight
wordDivider.deleteWordStartLeft			deleteWordStartLeft
wordDivider.deleteWordStartRight			deleteWordStartRight
wordDivider.cursorWordAccessibilityLeft			cursorWordAccessibilityLeft
wordDivider.cursorWordAccessibilityLeftSelect			cursorWordAccessibilityLeftSelect
wordDivider.cursorWordAccessibilityRight			cursorWordAccessibilityRight
wordDivider.cursorWordAccessibilityRightSelect			cursorWordAccessibilityRightSelect
wordDivider.cursorWordEndLeft			cursorWordEndLeft
wordDivider.cursorWordEndLeftSelect			cursorWordEndLeftSelect
wordDivider.cursorWordPartLeft		⌃ ⌥ ←	cursorWordPartLeft
wordDivider.cursorWordPartLeftSelect		⌃ ⇧ ⌥ ←	cursorWordPartLeftSelect
wordDivider.cursorWordPartRight		⌃ ⌥ →	cursorWordPartRight
wordDivider.cursorWordPartRightSelect		⌃ ⇧ ⌥ →	cursorWordPartRightSelect
wordDivider.cursorWordPartStartLeft			cursorWordPartStartLeft
wordDivider.cursorWordPartStartLeftSelect			cursorWordPartStartLeftSelect
wordDivider.cursorWordRight			cursorWordRight
wordDivider.cursorWordRightSelect			cursorWordRightSelect
wordDivider.cursorWordStartLeft			cursorWordStartLeft
wordDivider.cursorWordStartLeftSelect			cursorWordStartLeftSelect
wordDivider.cursorWordStartRight			cursorWordStartRight
wordDivider.cursorWordStartRightSelect			cursorWordStartRightSelect
wordDivider.lastCursorWordSelect			lastCursorWordSelect
wordDivider.addSelectionToNextFindMatch	Ctrl+D	⌘ D	editor.action.addSelectionToNextFindMatch
wordDivider.moveSelectionToNextFindMatch	Ctrl+K Ctrl+D	⌘ K ⌘ D	editor.action.moveSelectionToNextFindMatch