In `library`, add `toast` component

[pylapp]

Description

As a user of the OUDS library
I want to be able to use the component
So that I can add an OUDS component in my own projects

As a user of the library
I want to be able to use the component
So that I have access to the documentation on how to use it

As a user of the Design System Toolbox app
I want to access the component
So that I can understand how to use it:

• while using the Design System Toolbox app I can interact with the available options and observe the changes on the component itself
• I can see the code associated to the component customization
• I can copy and paste the code from the app based on the selected customization
• or when looking into the code of the app itself, I would also understand how to use it

See Figma resource

Definition of Ready

• Implementation of tokens v2.7 (In library, add tokens v2.7.0 #1471)

Definition of Done

Jetpack Compose library

• Implement components
• Update documentation
• Update CHANGELOG

Design System Toolbox

• Add page for component
• Update snapshot tests
• Update CHANGELOG

[pylapp]

Caution

on hold until v2.7 of tokens is implemented (#1471)