update: improve documentation and restructure code for modular hardware integration, add CAN communication to HAL, and update KiCad layouts

Hardware/Controller/MainBoard/PlantCtrlESP32.kicad_sch

@@ -8333,28 +8333,6 @@
 			)
 		)
 	)
-	(global_label "CONFIG2"
-		(shape input)
-		(at 142.24 44.45 180)
-		(fields_autoplaced yes)
-		(effects
-			(font
-				(size 1.27 1.27)
-			)
-			(justify right)
-		)
-		(uuid "4aed43a7-6995-42f6-b313-69653f7d36d4")
-		(property "Intersheetrefs" "${INTERSHEET_REFS}"
-			(at 131.8051 44.45 0)
-			(effects
-				(font
-					(size 1.27 1.27)
-				)
-				(justify right)
-				(hide yes)
-			)
-		)
-	)
 	(global_label "3_3V"
 		(shape input)
 		(at 224.79 57.15 0)
@@ -9147,6 +9125,28 @@
 			)
 		)
 	)
+	(global_label "BOOT_SEL"
+		(shape input)
+		(at 142.24 44.45 180)
+		(fields_autoplaced yes)
+		(effects
+			(font
+				(size 1.27 1.27)
+			)
+			(justify right)
+		)
+		(uuid "8202cf4c-8ab8-4793-979c-ae5015ef80e9")
+		(property "Intersheetrefs" "${INTERSHEET_REFS}"
+			(at 130.6562 44.45 0)
+			(effects
+				(font
+					(size 1.27 1.27)
+				)
+				(justify right)
+				(hide yes)
+			)
+		)
+	)
 	(global_label "GND"
 		(shape input)
 		(at 113.03 123.19 270)