Add `Forms` section

[feimosi]

At least a simple example of using forms (with two-way data binding when available):

• [X] AngularJS:

  <form name="$ctrl.loginForm">
  ...
  </form>

• [X] Angular:

  <form #loginForm="ngForm">
  </form>

• [X] React:

  <form onSubmit={this.handleSubmit}>
  </form>

Preferably also with links to docs.

[M-ZubairAhmed]

can i work on this for react form?

[feimosi]

Sure! 👍