[Feature Request]: Make a `data` module

[gogonzo]

Feature description

After establishing reactive link between data and modules. We should decide how we want data module to be displayed. Should it be:

• separate tab
• sidebar panel

Restrictions:

• It can't be a modal as some connectors using modal, and it's not possible to open modal from modal (there can be only one modal at the time)

[m7pr]

Can we open a modal inside a modal with nested closable modal from teal.widgets by @vedhav ?