refactor(userspace/apps/test): ♻️ move all functions in one file

it's just too much...

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

Userspace/apps/test/libc_test/fcntl.c

@@ -0,0 +1,48 @@
+/*
+	This file is part of Fennix Userspace.
+
+	Fennix Userspace 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 Userspace 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 Userspace. If not, see <https://www.gnu.org/licenses/>.
+*/
+
+#include <fcntl.h>
+
+int test_creat()
+{
+	return 2;
+}
+
+int test_fcntl()
+{
+	return 2;
+}
+
+int test_open()
+{
+	return 2;
+}
+
+int test_openat()
+{
+	return 2;
+}
+
+int test_posix_fadvise()
+{
+	return 2;
+}
+
+int test_posix_fallocate()
+{
+	return 2;
+}