Add current limit configuration for VIN, MAIN, and USB

- Integrated current limit settings in `nconfig`.
- Enabled API support for managing current limits.
- Added UI components for configuring current limits.
- Implemented backend logic for handling validations and updates.

Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>

main/service/sw.h

@@ -7,6 +7,7 @@
 #include <stdbool.h>
 
 void init_sw();
+void config_sw();
 void trig_power();
 void trig_reset();
 void set_main_load_switch(bool on);