docs(kit): updated ecopasskit software development view, added new diagrams and adjusted content to reference implementation

[matbmoser]

Why do we create this PR:

There is the requirement to update the Eco Pass KIT development view

What do we what to do in this PR

We want to update the development view, and add the necessary diagrams, content and descriptions to match the reference implementation of the Digital Product Pass.

What has changed?

Added

• Added new sequence diagrams in software architecture
• Added detailed data retrieval flow

Updated

• Updated Software Architecture guide with descriptive documentation

Issues Fixed

• Corrected links paths to absolute path

Content Review PRs:

• Bugfix/sequence diagram update: Update API data retrieval diagrams eco-pass-kit#29

Related PRs:

• [Adoption View] -> docs(kit): updated ecopasskit adoption view, dpp aspect added, business arch updated and other document changes #630

This is the second PR from the EcoPass KIT v2.0.0 Update

Pre-review checks

Please ensure to do as many of the following checks as possible, before asking for committer review:

• DEPENDENCIES are up-to-date. Dash license tool. Committers can open IP issues for restricted libs.
• Copyright and license header are present on all affected files

[matbmoser]

I am the author of all the images, even if it says that is 47k code changes, no IP check is necessary since I was the one that created them. (They are in svg, because of this it counts as lines of code)

[maxim-bo]

Some minor typos and grammar issues found, apart from that no complaints!

[matbmoser]

Linting problems are not from EcoPass KIT

[maximilianong]

@matbmoser please resolve the conflict we need to merge it today for the release.

[matbmoser]

@maximilianong done!