Fill the project's documentation

[UO282497]

Sub-issues:

• Fill "1. Introduction and Goals" of the documentation #9
• Fill "2. Architecture Constraints" of the documentation #10
• Fill "3. System Scope and Context" of the documentation #11
• Fill "4. Solution Strategy" of the documentation  #12
• Fill "5. Building Block View" of the documentation #13
• Fill "6. Runtime View" of the documentation #14
• Fill "7. Deployment View" of the documentation #16
• Fill "8. Cross-cutting Concepts" of the documentation #15
• Fill "9. Design Decisions" of the documentation #17
• Fill "10. Quality Requirements" of the documentation #20
• Fill "11. Risks and Technical Debts" of the documentation #18
• Fill "12. Glossary" of the documentation #19

[alvaroglezeri]

Link con info sobre como editar archivos .adoc:
https://powerman.name/doc/asciidoc

[alvaroglezeri]

The final version of the Documentation is now implemented. There might be still some small errors in it, but if they are, they most likely are minor.