use GridDraggable instead of Column in SolaraViz

[wang-boyu]

This PR brings back the draggable and resizable Solara layout that was in the old Solara viz (now experimental).

[github-actions]

Performance benchmarks:

Model	Size	Init time [95% CI]	Run time [95% CI]
BoltzmannWealth	small	🔵 +1.1% [+0.2%, +1.9%]	🔵 -0.2% [-0.4%, -0.1%]
BoltzmannWealth	large	🔵 -0.8% [-1.6%, -0.1%]	🔵 -0.4% [-1.4%, +0.6%]
Schelling	small	🔵 -0.2% [-0.4%, +0.1%]	🔵 +0.1% [-0.1%, +0.3%]
Schelling	large	🔵 -0.0% [-1.2%, +1.0%]	🔵 +0.0% [-1.4%, +1.5%]
WolfSheep	small	🔵 -0.6% [-0.9%, -0.4%]	🔵 +0.4% [+0.2%, +0.6%]
WolfSheep	large	🔵 -1.6% [-2.4%, -0.7%]	🔵 +0.1% [-1.9%, +2.3%]
BoidFlockers	small	🔵 -1.1% [-1.5%, -0.6%]	🔵 +1.0% [+0.3%, +1.7%]
BoidFlockers	large	🔵 -0.3% [-0.6%, +0.1%]	🔵 +1.3% [+0.9%, +1.7%]

[EwoutH]

If I understand this correctly, I really like this conceptually!

I will test it tomorrow. Thanks for working on this, the visualization deserves more love!

[EwoutH]

Tested, looks goods and works well. Thanks!

One small remark: It looks like it only rescales on width, and not on height. Maybe we want to modify it that it also follows the maximum height:

But this isn't blocking, and can be done in another PR.