AIP-68 Add react plugins Dag/Task Overview pages

[pierrejeambrun]

Description

In #53377 we added react plugins to the nav bar and dag tabs as their own contained views. Next up, we want to add react plugins into our overview pages as one component among many. (Task + Dag)

This also requires some refactoring of the layout of each page to support a component of unknown size being added.

Ideally, we use a flex grid or flex container and allow a plugin developer to use only css to specify the order positioning of their component without the plugin manager needing any additional fields.

[pierrejeambrun]

cc: @bbovenzi