feat: Add Process Manager, Limine Framebuffer GUI, RTL8139 Net stack, and extended UNIX commands

lib/libc/include/stdio.h

@@ -9,6 +9,8 @@ extern "C" {
 
 int puts(const char *s);
 int putchar(int c);
+int printf(const char *format, ...);
+int sprintf(char *str, const char *format, ...);
 
 #ifdef __cplusplus
 }

lib/libc/include/stdlib.h

@@ -14,6 +14,7 @@ void *realloc(void *ptr, size_t size);
 
 void abort(void);
 void exit(int status);
+int  atoi(const char *nptr);
 
 #ifdef __cplusplus
 }

lib/libc/include/string.h

@@ -17,6 +17,8 @@ int    strcmp(const char *s1, const char *s2);
 int    strncmp(const char *s1, const char *s2, size_t n);
 char  *strcpy(char *dest, const char *src);
 char  *strncpy(char *dest, const char *src, size_t n);
+char  *strchr(const char *s, int c);
+char  *strstr(const char *haystack, const char *needle);
 
 #ifdef __cplusplus
 }