Option to pass in App init parameters through config file (with an example)

[ZacZhangzhuo]

This should be a clean PR with only configuration and its tutorials. The only addition is three diagrams. @Licini

What type of change is this?

• Option to pass in App init parameters through config file (with an example)
• Add Developer Guide section in the documentation.
• Update the example files in the tutorial.
• Update the software architecture diagram in the documentation.
• Update the UI naming conventions diagram in the documentation.
• Add the Tutorial Software Concepts section in the documentation.
• Add the Tutorial Configuration section in the documentation.

Checklist

• [x] I added a line to the CHANGELOG.md file in the Unreleased section under the most fitting heading (e.g. Added, Changed, Removed).
• [x] I ran all tests on my computer and it's all green (i.e. invoke test).
• [x] I ran lint on my computer and there are no errors (i.e. invoke lint).
• [x] I added new functions/classes and made them available on a second-level import, e.g. compas.datastructures.Mesh.
• [x] I have added tests that prove my fix is effective or that my feature works.
• [x] I have added necessary documentation (if appropriate)