* maint(build): remove legacy GNU Make build system support
* maint(example): move the example so that component manager finds it
* maint(example): specify component dependency
* maint(build): clean up legacy 'register_component' usage
* maint(build): specify more fields in component manifest
* doc(readme): simplify installation instructions
See https://github.com/espressif/esp32-camera/issues/596
* maint(ci): remove tests for EOL versions (v4.1, v4.2)
* fix(build): add missing transitive dependency on driver component
