Add CI System to Sassena and Modernize Build-System

Add a CI System to Sassena. Currently it builds the code as well as the documentation (including option to publish to the gitlab pages site) and runs a couple of unit tests. This MR also includes changes to the CMake scripts so that the project is up-to-date with modern practices and removes a lot of the old cruft. Another important change is moving the many miniature static libraries (e.g. log, which only has one translation unit) into one library called SassenaCore (under /src/core). This library is then linked with an application (under src/app) to provide the command-line functionality for the user.

added Build-System Upgrades label

assigned to @daniel.vonk

added 58 commits

• fd782b0e...d89fd011 - 2 commits from branch develop
• d89fd011...1f8065fb - 46 earlier commits
• 67daf2a1 - Remove deploy stage for now
• 54d9b842 - Add 2nd test
• 95a2c7f8 - Update Dockerfile
• 4d5c03cb - Add build steps for docs
• 9d0f8ec1 - Add graphviz to docker container
• 492a7761 - Fix Dockerfile
• 6261d3b2 - Add file_map documentation
• ae591446 - Update gitlab CI
• 1c8cea85 - Set correct CI dependency chain
• a3adce16 - Set deploy-docs to manual only

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added 1 commit

• 367f2c2f - Fix CMake script when using WERROR

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added 1 commit

• 05ae3010 - Remove old CMake scripts

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changed the description

requested review from @sebastian.busch

merged

added 1 commit

• 0ec8d74c - Remove common.hpp/cpp copies in app/

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added 1 commit

• dd7707da - Add futher CMake presets

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approved this merge request