Improve Input Switch component

[dfsmania]

Question	Answer
Pull request type	ENHANCEMENT
License	MIT

What's in this PR?

This PR allows specifying a custom value attribute when using the <x-adminlte-input-switch> component, which defaults to 'true' when not specified. Examples:

{{-- The next component will submit 'true' when the switch is on --}}
<x-adminlte-input-switch name="example1"/>

{{-- The next component will submit '1' when the switch is on --}}
<x-adminlte-input-switch name="example1" value="1"/>

This will fix #1316

Also a new is-checked attribute (of boolean type) was added to use as an alternative of the standard checked, to simplify the usage of the component for next situation:

{{-- Instead of next code --}}
@if($isCheckboxChecked)
    <x-adminlte-input-switch name="example1" checked/>
@else
    <x-adminlte-input-switch name="example1"/>
@endif

{{-- You can now simply use --}}
<x-adminlte-input-switch name="example1" is-checked="{{ $isCheckboxChecked }}"/>

Checklist

• I tested these changes.
• I have linked the related issues.