Add project files (part 1/2)

Co-Authored-By: Claude Sonnet 5 <[email protected]>

third_party/minicrt/include/string.h

@@ -0,0 +1,18 @@
+#pragma once
+#include <stddef.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+void *memcpy(void *, const void *, size_t);
+void *memmove(void *, const void *, size_t);
+void *memset(void *, int, size_t);
+int memcmp(const void *, const void *, size_t);
+size_t strlen(const char *);
+int strcmp(const char *, const char *);
+int strncmp(const char *, const char *, size_t);
+char *strcpy(char *, const char *);
+char *strncpy(char *, const char *, size_t);
+char *strchr(const char *, int);
+#ifdef __cplusplus
+}
+#endif