Add CONFIG_MODULE parameter to CMake function. Add Tests for CMake Integration.

This MR slightly improves the CMake integration of pystencils-sfg and adds tests for it:

• Add CONFIG_MODULE as a parameter to pystencilssfg_generate_target_sources, allowing to set the configuration module on a per-script basis
• Add a small CMake project to the test suite

changed milestone to %Version 0.1

requested review from @ob28imeq

assigned to @da15siwa

added 1 commit

• bf9e148d - lower cmake version requirement because of outdated docker container

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added 3 commits

• bf9e148d...7de3cd0b - 2 commits from branch master
• e996d33d - Merge branch 'master' into fhennig/cmake-config-module-param

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added 1 commit

• 65ec6470 - fix mypy: ignore sympy imports

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added 1 commit

• 15a0162c - re-added integration folder

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changed the description

mentioned in commit c70a1c03

merged