feat(platorm): add lstat(2) to platform library

`rm -rf` uses lstat(2) to properly handle symbolic links. Since Zephyr doesn't have them, it shall continue using stat(2).

Signed-off-by: Krisztian Szilvasi <34309983+kr-t@users.noreply.github.com>

Author: kr-t

src/platform/include/ocre/platform/lstat.h

@@ -0,0 +1,10 @@
+/**
+ * @copyright Copyright (c) contributors to Project Ocre,
+ * which has been established as Project Ocre a Series of LF Projects, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <sys/stat.h>
+
+int ocre_lstat(const char *path, struct stat *buf);

src/platform/posix/CMakeLists.txt

@@ -11,6 +11,7 @@ target_sources(OcrePlatform
     log.c
     file_mmap.c
     # file_alloc_read.c
+    lstat.c
 )
 
 target_include_directories(OcrePlatform

src/platform/posix/lstat.c

@@ -0,0 +1,13 @@
+/**
+ * @copyright Copyright (c) contributors to Project Ocre,
+ * which has been established as Project Ocre a Series of LF Projects, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <sys/stat.h>
+
+int ocre_lstat(const char *path, struct stat *buf)
+{
+	return lstat(path, buf);
+}

src/platform/zephyr/CMakeLists.txt

@@ -9,6 +9,7 @@ target_sources(OcrePlatform
     PRIVATE
     memory.c
     ../posix/file_alloc_read.c
+    lstat.c
 )
 
 target_include_directories(OcrePlatform

src/platform/zephyr/lstat.c

@@ -0,0 +1,13 @@
+/**
+ * @copyright Copyright (c) contributors to Project Ocre,
+ * which has been established as Project Ocre a Series of LF Projects, LLC
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <sys/stat.h>
+
+int ocre_lstat(const char *path, struct stat *buf)
+{
+	return stat(path, buf);
+}