Got rid of the `sketch` search parameter from the URL.
Rules:
- Get the desired workspace location from the
- `Path` defined as the `window.location.hash` of the URL,
- most recent workspaces,
- most recent sketches from the default sketch folder.
- Validate the location.
- If no valid location was found, create a new sketch in the default sketch folder.
Note: when validating the location of the workspace root, the root must always exist. However, when in pro-mode, the desired workspace root must
not be a sketch directory with the `.ino` file, but can be any existing location.
Signed-off-by: Akos Kitta <kittaakos@typefox.io>
