Initial PNG CC Implementation

Signed-off-by: Pin <wf6DJd8a3xSSCZbn@protonmail.com>

Makefile

@@ -0,0 +1,19 @@
+LIBRARIES = `pkg-config --libs zlib libsodium` -Iinclude
+SOURCES = ./src/* ./cmd/crc.c
+OUTPUT_DIR = ./bin
+OUTPUT = -o ${OUTPUT_DIR}/PROG
+
+build: output_dir
+	gcc -Wall ${LIBRARIES} ${SOURCES} ${OUTPUT:PROG=crc}
+
+debug: output_dir
+	gcc -Wall -g ${LIBRARIES} ${SOURCES} ${OUTPUT:PROG=crc}
+
+output_dir:
+	mkdir -p ${OUTPUT_DIR}
+
+clean:
+	rm -rf $(OUTPUT_DIR) **.h.gch
+
+memcheck: debug
+	valgrind --tool=memcheck --leak-check=yes --show-reachable=yes --num-callers=20 --track-fds=yes -s ${OUTPUT_DIR}/crc