Add endstops, light_sensor, test, many fixes

- Added endstop and light_sensor module
 - Improved configuration by splitting wiring configs to boards.h
 - Added a unit test for argument parsing
 - Fixed many smaller bugs

src/config.h

@@ -1,27 +1,45 @@
 #ifndef CONFIGURED
+    //board choice
+    #define BOARD_AUTO
+    //#define BOARD_SANGABOARDv3
+    //#define BOARD_SANGABOARDv2
+    //#define BOARD_CUSTOM
+    #include <boards.h> //defines wiring
+
     //general settings
     #define MAX_COMMANDS 50
     #define MAX_MODULES 10
+    #define MAX_ARGUMENT_LENGTH 20 //used in argument parsing, takes up ram
     #define VERSION_STRING "Sangaboard Firmware v0.6"
     #define DEBUG_ON
 
     //module choice
     #define HELP
     #define STAGE
+    #define ENDSTOPS
+ //   #define LIGHT_SENSOR
 
     //module configs
     #ifdef STAGE
-        //TODO: Fix this for platformio
-        #ifdef ARDUINO_AVR_LEONARDO
-            #define SANGABOARDv3
-            #define BOARD_STRING "Sangaboard v0.3"
-        #elif ARDUINO_AVR_SANGABOARD
-            #define SANGABOARDv3
-            #define BOARD_STRING "Sangaboard v0.3"
-        #else
-            #define SANGABOARDv2
-            #define BOARD_STRING "Sangaboard v0.2"
+        #define STAGE_N_MOTORS 3
+    #endif
+
+    #ifdef ENDSTOPS
+        #define ENDSTOPS_MIN
+        //#define ENDSTOPS_MAX
+        #if defined(ENDSTOPS_MIN) || defined(ENDSTOPS_MAX)
+            //endstops are closed when the pin is down  by default, this inverts the behaviour
+            //soft endstops trigger when 0/MAX is reached in the direction without endstops
+            #define ENDSTOPS_SOFT
         #endif
     #endif
+
+    #define LIGHT_SENSOR_ADAFRUIT_TSL2591
+    //#define LIGHT_SENSOR_ADAFRUIT_ADS1115
+
+    //config for non-standard platforms
+    #ifndef MCU_PICO
+        #define SUPPORT_EEPROM
+    #endif
     #define CONFIGURED
 #endif