Value Slider

[aaroncox]

Create a new component with Unicove to serve as a slider that can bind to a text input.

Notes:

• Create a global component for the horizontal slider element. Click and hold to drag and update its internal value.
• This should be a new example page in the _components folder showing it in action and how its implemented.
• The slider should have a minimum and maximum value that's able to be configured, e.g. max = user balance.
• The internal value should be an exposed writable store, allowing it to be updated externally.
• The slider component should be able to be tied to a text input component (which is already created), if the input is updated, the slider should update, and if the slider is updated the input should update.
• Avoid using an external library if possible?

References:

• Components folder with all the other global components: https://github.com/greymass/unicove/tree/dev/src/components/elements
• Component examples folder: https://github.com/greymass/unicove/tree/dev/src/pages/_components

[apporc]

#194 implemented, it's just not tied to a text input component