reworking dash debug tools interface

[BSd3v]

A couple of things to note here:

• I removed color declarations in order to allow app definitions to take precedence over the colors.
• I adjusted the color on the toolbar itself to have some alpha in order to allow the app background to get added to
• the toolbar is now toggle-able, when hidden error count goes to the toggle button
• the toolbar is now a footer
• when the toolbar is shown, the app is scaled dynamically based upon the screen size and given 40px for the toolbar to display
• when the toolbar is not shown, the app is full size, and the toggle button is placed on top with a zIndex of 10000
• the toolbar no longer needs zIndex as it has been given space in the page

The main thing that needs to get worked on here is the toggle button:

• obviously the button needs to be styled
• when the screen size is narrow, the toolbar and button collide, need to implement some sort of way to implement a selection for the tool to display and the other info to display (dash version)

@marthacryan @ndrezn

[BSd3v]

[BSd3v]

Notifications shown above the toolbar

Working with Drawer in Mantine

Bootstrap offcanvas

[gvwilson]

thanks very much for this @BSd3v - we are going to ship Dash 3.0.0 with the existing dev tools UI and will then come back immediately to look at improving it (either via this PR or something similar).