feat(coreutils): implement coreutils and compile it using cmake

Signed-off-by: EnderIce2 <enderice2@protonmail.com>

Userspace/coreutils/include/coreutils.h

@@ -0,0 +1,38 @@
+/*
+	This file is part of Fennix Core Utilities.
+
+	Fennix Core Utilities is free software: you can redistribute it and/or
+	modify it under the terms of the GNU General Public License as
+	published by the Free Software Foundation, either version 3 of
+	the License, or (at your option) any later version.
+
+	Fennix Core Utilities is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with Fennix Core Utilities. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#ifndef _COREUTILS_H
+#define _COREUTILS_H
+
+#ifndef PROGRAM_NAME
+#define PROGRAM_NAME "<unknown>"
+#endif
+
+#ifndef PROGRAM_VERSION
+#define PROGRAM_VERSION "<unknown>"
+#endif
+
+#define BUILD_YEAR (__DATE__ + 7)
+
+#define PRINTF_VERSION                                                          \
+	printf("%s %s\n", PROGRAM_NAME, PROGRAM_VERSION);                           \
+	printf("Fennix Core Utilities  Copyright (C) %s  EnderIce2\n", BUILD_YEAR); \
+	printf("This program comes with ABSOLUTELY NO WARRANTY\n");                 \
+	printf("This is free software, and you are welcome to redistribute it\n");  \
+	printf("under certain conditions\n")
+
+#endif // _COREUTILS_H