Switch to Dash Mantine Components library for nicer looking UI

[alyssadai]

https://www.dash-mantine-components.com/

Component parity check:

• dbc.Navbar
• dbc.NavbarBrand
• dbc.NavLink
• dbc.Badge
• dbc.Container
• dbc.Row
• dbc.Col
• dbc.Stack
• dbc.Tooltip
• dbc.Button
• dbc.Modal (header, body, footer)
• dbc.Card
• dbc.Collapse
• dbc.Label
• dbc.Form
• dbc.Switch

[github-actions]

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