Information about Coin instruction templates

Build templates

• coin_qtbase_build_template_v2.yaml did not exist. The build instructions were directly embedded into module_config.yaml and did not support repos outside of qtbase, also no cross-compilation.
• coin_qtbase_build_template_v2 introduced support for building other repos, and also enabled build cross-compiling targets like Android and iOS. A bit later the template gained the ability to build qemu cross-compiling configurations. The counterpart to qtbase to build other repositories is coin_module_build_template_v2

Test templates

• coin_module_test_template_v1 did not exist. The test instructions were directly embedded into module_config.yaml and did not support repos outside of qtbase, also no cross-compilation.
• coin_module_test_template_v2 introduced support for building tests for other repos, and made sure not to build and run tests on cross-compiling configuration. A bit later the template gained the ability to build and run tests for qemu cross-compiling configurations.
• coin_module_test_template_v3 changed the run test instructions to not ignore the exit code and thus enforce that tests pass in the CI.