This is not quite ideal due to
https://github.com/microsoft/vscode/issues/99767
Allow multiselection in the query-history view. For commands
that shouldn't accept multiple options, show a user message
to that effect.
For remove query, allow multiple removals at once.
For compare query, allow selecting of exactly two queries.
Otherwise, throw an error. Also, verify that the selected queries
are compatible to compare.
Adds eslint support and fixes linting problems in a few files.
This change adds an npm task, but does not enforce linting for builds.
The idea is to slowly fix linting problems over time.
Closes#238.
