feat(ViSR): Controls in a collapsible drawer for spectroscopy view

[Abigail-Yates]

This PR builds on (or replaces) PR #126 - initial layout for dynamic expanding plot divs.

PR #126

• moves the ViSR Spectroscopy Controls into a collapsible drawer.
• adds 'PlotFrame.tsx' to arrange the plots in a row of 4 when the drawer is expanded and a grid when it is collapsed.

This PR also

• removes the need for PlotFrame.tsx by installing and using the react-grid-layout package (but keeps the PlotFrame.tsx file, in case it is decided it is preferred)
• Adds the 'gray' channel to the spectroscopy view (fixes typing errors, possibly not in the way as described here https://jira.diamond.ac.uk/browse/EU-401 )
• Fixes the resizing issues when changing browser size by changing the Box component to a div (https://jira.diamond.ac.uk/browse/EU-399 )
• Removes the issue with different formats for the plot aspect ratio by removing the need for PlotFrame.tsx ( https://jira.diamond.ac.uk/browse/EU-400 )