* missing ltc4150 shell command handler file

sys/shell/ltc4150.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <ltc4150.h>
+
+void _get_current_handler(char* unused) {
+	printf("Power usage: %.4f mA (%.4f mA avg/ %.4f mAh total)\n", ltc4150_get_current_mA(), ltc4150_get_avg_mA(), ltc4150_get_total_mAh());
+}
+
+void _reset_current_handler(char* unused) {
+	ltc4150_start();
+}