Initial implementation of the application performance testing capabilities

[bevalentin]

Initial implementation of the application performance testing capabilities

• Different types of "applications" require different solutions: EO Application Packages, Jupyter notebooks, OpenEO workflows
• Application artifacts identified by parameter or discovered dynamically (automatic search for .ipynb files).
• Requires providing test inputs or test scripts in application repositories. These scripts may perform different types of tests: unit, performance, validation, etc. and must output the results in a structured format.
• Applications built (as necessary), deployed and executed with test inputs or using the scripts
• Execution outputs and resource usage information are collected and available in reports