Create the Garden component

[tborsa]

Create a garden component that works as a grid of plant components see #7.
The garden can optionally have plants take up spots.
Clicking on a square with a plant will give you the option to water that plant. (should be a limit on how often you can do this)
Clicking on a square without a plant will give you the option to plant a seed.
It is up to you on how the watering/planting UI looks and feels.

Eventually the water/plant actions will communicate with other clients by websockets and pass appropriate information to the child plant or create a new child plant.