area/ui: rejig dashboard buttons

[yomete]

This is a PR that restructures the toolbar buttons.

Summary:

• The "Sort by" button is moved within the context of the icicle graph.
• The "Table columns" button is moved within the context of the table component.
• The table component now has a column to display the color which can either be the filename or binary.
• Hiding binaries now works with the table component
• The color legend is now above both the icicle and table visualisations. it was previously located above the icicle viz only.

[alwaysmeticulous]

🤖 Meticulous spotted visual differences in 214 of 306 screens tested: view and approve differences detected.

Meticulous simulated ~4 hours of user flows against your PR.

_{Last updated for commit 48e967f. This comment will update as new commits are pushed.}

[manojVivek]

Lgtm!