Implementing user specific features from the webapp to the ISO

[pranav1698]

• Issue type: Feature request

Short description

The features array is sent to the build server now as an environment variable, now these features that are chosen by the user to enable needs to be enabled in the meilix desktop.
There is a variety of features that the user can enable (disabled by default) that can be chosen from the meilix-generator

Usecase

This feature will help to create custom distributions which will have the features that will be disabled by default but can be enabled by the choice of the user. The various options can be seen by seeing the meilix-generator.