Refactor for modularity and Responsibility-Drivenness

[ibrahimsel]

• The codebase seemingly has a lot of if else branches, leading to make it hard to read the code and develop a new feature.
• This is especially true for muto_composer.py, provision_plugin.py, and launch_plugin.py
• For muto_composer.py, Something like StackRequest or StackParser helper could be added to get rid of the stacked ifs.
  @nacidai