Add column hiding feature

[josh-griffin]

Need to add a feature to hide columns in the table

UI:

[It annoys me that the checkboxes in the modal have a different border to the checkboxes in the table - also the alignment of the buttons and columns of checkboxes/title feels off 🤣 ]

Implementation:
Should just need to change the columns, I think..

Tasks:

• Might need to add a new button for the Columns button itself in the toolbar. It looks like a baby flat button.
• I think I want to create a SettingsModal for a simple layout of checkboxes and buttons. Not sure that name is nice or if it will be used elsewhere so maybe not a good idea. Possibly just a checkbox group component
• Have the modal update button actually effect the columns in the table
• Would be good to save which rows are hidden in local storage somewhere? Possibly to save to the server against the user at some point

[josh-griffin]

has been mentioned that this can be pushed to v2