Webviz-config

Added
- [279](https://github.com/equinor/webviz-config/pull/279) - Added scrollbar to menu (when larger than screen size).

Added
- [269](https://github.com/equinor/webviz-config/pull/269) - Added an optional argument `screenshot_filename` to `WebvizPluginABC`. Can be used to let plugin authors specify filename used when screenshots of the plugin are saved.
- [275](https://github.com/equinor/webviz-config/pull/275) - Indented docstrings are now supported by `webviz docs`.

Added
- [265](https://github.com/equinor/webviz-config/pull/265) - Added support to automatically create JSON/YAML schema based on installed plugins to be used in e.g. VSCode with the [Red Hat YAML extension for VSCode](https://marketplace.visualstudio.com/items?itemName=redhat.vscode-yaml). Create a schema by running `webviz schema`.