Adds cool-tabs:atEndOfLine and cool-tabs:atStartOfLine as "when" context variables for key shortcuts to allow to use the tab key for the "Indent line" action while in the middle of a line, without losing ability to use tab for auto-complete or tab to automatically add the right amounts of tab.
Suggested "when" condition: editorTextFocus && !cool-tabs:atEndOfLine && !cool-tabs:atStartOfLine && !editorReadonly && !suggestWidgetVisible && !inSnippetMode.