- Fixed a monitor reconnecting issue after upload.
- Serial monitor connection was not disposed when the widget was closed
from the toolbar with the magnifier (🔍) icon. It worked only iff the
user closed the view with the `X`.
- This commit also fixes a warning that was related to the incorrect focus
handling of the widget.
- Switched to `board list -w` instead of polling.
- Added a singleton for the board discovery to spare the CPU.
- Fixed DI scopes on the backend. Each frontend gets its own service.
- Switched to the `20201112` nightly CLI.
- Fixed the Monitor view's image when the view is on the side-bar.
Signed-off-by: Akos Kitta <kittaakos@typefox.io>
