create border and palette folder for updater transition (#196)

Palette/gbpalette.c

@@ -0,0 +1,61 @@
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+// GBP file format is simple. There are 4 palette colors using 8 bit
+// rgb, starting from lightest ending in darkest for a total of 12 bytes.
+// The last several bytes are 0, reserved for future use.
+
+
+void gbp_get_color(uint8_t *palette, uint32_t index)
+{
+	char buffer[100];
+
+	printf ("Red   (0-255): ");
+	fgets(buffer, sizeof(buffer), stdin);
+	palette[index] = (uint8_t) strtol(buffer, NULL, 10);
+
+	printf ("Green (0-255): ");
+	fgets(buffer, sizeof(buffer), stdin);
+	palette[index + 1] = (uint8_t) strtol(buffer, NULL, 10);
+
+	printf ("Blue  (0-255): ");
+	fgets(buffer, sizeof(buffer), stdin);
+	palette[index + 2] = (uint8_t) strtol(buffer, NULL, 10);
+}
+
+int main (int argc, char **argv)
+{
+	uint8_t palette[16];
+	memset(palette, 0, sizeof(palette));
+
+	if (argc < 2) {
+		printf("Usage: %s <filename>\n", argv[0]);
+		return 1;
+	}
+
+	FILE *f = fopen(argv[1], "w");
+	if (!f) {
+		printf("Unable to open %s for writing.\n", argv[1]);
+		return 1;
+	}
+
+	printf("Color 1:\n");
+	gbp_get_color(palette, 0);
+
+	printf("Color 2:\n");
+	gbp_get_color(palette, 3);
+
+	printf("Color 3:\n");
+	gbp_get_color(palette, 6);
+
+	printf("Color 4:\n");
+	gbp_get_color(palette, 9);
+
+	fwrite(palette, 1, 16, f);
+
+	fclose(f);
+
+	return 0;
+}