update project template

• project-template: increase DOT_GRAPH_MAX_NODES
• project-template: allow non-DESY copyright owners
• set IMAGE_PATH
• refactor SamplingScheme module (#9993)
• project-template: make config_generator_project future proof

assigned to @martin.hierholzer

added 1 commit

• 7bca8eaf - Merge remote-tracking branch 'project-template/master' into update-project-template

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merged