Feature: APP-2700 - Switch component

[Fabricevladimir]

Description

• Implements the Switch component

Task: APP-2700

Type of change

• New feature (non-breaking change which adds functionality)

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran all tests with success and extended them if necessary.
• I have updated the CHANGELOG.md file in the root folder of the package after the [UPCOMING] title and before
  the latest version.
• I have tested my code on the test network.

[Fabricevladimir]

@RuggeroCino, noticed we've got a few components that can be either controlled or uncontrolled, this Switch included. I propose we add some sort of warning mechanism so that we can provide proper warnings when the change handler function is missing or a component switches from controlled<=>uncontrolled. It's not a priority right now, but I think it's a definite nice to have.

Here's an interesting library that tries to mirror what Facebook does with react: https://www.npmjs.com/package/warning.

[cgero-eth]

Well done @Fabricevladimir 👏🏻 Left some small comments

[cgero-eth]

👏🏻 👏🏻 👏🏻