neighbors: Add makefile for usermod

Author: jonnor

src/emlearn_neighbors/micropython.mk

@@ -0,0 +1,9 @@
+MOD_DIR := $(USERMOD_DIR)
+
+# Add all C files to SRC_USERMOD.
+SRC_USERMOD_C += $(MOD_DIR)/neighbors.c
+
+EMLEARN_DIR := $(shell python3 -c "import emlearn; print(emlearn.includedir)")
+
+# We can add our module folder to include paths if needed
+CFLAGS_USERMOD += -I$(EMLEARN_DIR)