fix: add prefix for sensor functions name

[jimforr]

Description

Add prefix esp32_camera for sensor function name, to avoid same name as functions in esp_cam_sensor.
For example, sc030iot_detect is a same name function as it in esp_cam_sensor. Then once the linker finds sc030iot_detect in one translation unit, it won't even look into any other translation for this function. Another translation unit where this function is defined won't be considered by the linker for linking.

Testing

Tested locally on IDF release/v5.5.

Checklist

Before submitting a Pull Request, please ensure the following:

• 🚨 This PR does not introduce breaking changes.
• All CI checks (GH Actions) pass.
• Documentation is updated as needed.
• Tests are updated or added as necessary.
• Code is well-commented, especially in complex areas.
• Git history is clean — commits are squashed to the minimum necessary.

[jimforr]

can‘t pass CI checks (latest IDF version) because of following breaking change:
espressif/esp-idf@d0e24e4