add structurizr to diagramming

[shoveleejoe]

added structurizr to diagramming section

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Please take some time to answer the following questions as best you can:

• Why is it awesome?

Structurizr makes the C4 model more accessible and is easy and straightforward to use through a well-designed web interface. This simplifies the work of software, IT, and security architects and improves the usability of architectural documentation.

• Have you used it? For how long?

I have used Structurizer for two weeks, during which time I've generated and shared the architectural diagrams for 4 solutions and 11 patterns. This cut the time to complete this work by half.

• Is this in a personal or professional setup?

This is in a personal setup being used for professional use. Structurizr is running in a docker container in my home lab and is accessible from the Internet via a Cloudflare tunnel.

• How many devices/users/services/... do you manage with it?

I have created 4 users in my setup using local users, I have not used the LDAP integration option.

• Biggest pros/cons compared to other solutions?

Biggest Pro: Strucurizr adds several capabilities over other visual diagramming and diagramming-as-code tools and unifies them under one suite while maintaining a user-friendly experience.
Biggest Con: There is a learning curve to the C4 model and Structurizr expects the user to be familiar with the C4 model.

• Any other comments about your use case, things you've found excellent, limitations you've encountered... ?

Structurizr is a web interface accessed via browser, it does not provide significant security capabilities and should be accessible only through a web application firewall.

[nodiscc]

Missing several required fields (source code URL, license, language/platform), please refer to the Pull Request template and follow the recommended format.

Other entries in this section are also missing the required fields, because I did not have time to work on #416 on this section yet.