Enhancement: Refactor Visualisation Tab

[js3110]

Issue

Closes #127

Description

With the introduction of the TLGs tab, the Outputs section now is no longer required for reporting but rather for enhanced data visualisation. We want to change the layout so it is better for visualisation.

Definition of Done

• rename outputs to visualisation tab
• Modify layout to make for better exploratory analysis- bigger plots

How to test

Check visualisation tab layout

Contributor checklist

• Code passes lintr checks
• Code passes all unit tests
• New logic covered by unit tests
• New logic is documented

Notes to reviewer

The plan is to reformat this section using bslib, which will then need to be implemented across the rest of the app. Refactoring of the Data section is being covered by #140

[m-kolomanski]

Hey, good job in general, must have taken a lot of effort to get that together! The UI looks quite nice, my only suggestion would be to maybe try and work a bit with the widths of different elements (the drag-and-drop, buttons etc) to make it a bit more tight.

I also have some points of discussion, mainly in terms of code style and format.

[m-kolomanski]

I have approved the PR, code looks good, great work! I have left some minor nitpicks, but I consider them non-blocking.

Might be also worth adding some logs to better trace what is going on in the application.

[Gero1999]

lgtm