implemented the lexer

cc.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include "utils.h"
+#include "lexer.h"
+
+int main(void)
+{
+	FILE *fp = fopen("test.c", "r");
+	usize size = 0;
+	fseek(fp, 0, SEEK_END);
+	size = ftell(fp);
+	fseek(fp, 0, SEEK_SET);
+	char *src = malloc(size+1);
+	fread(src, size, 1, fp);
+	fclose(fp);
+	src[size] = '\0';
+
+	arena a = arena_init(0x1000 * 0x1000 * 64);
+	lexer *l = lexer_init(src, size, &a);
+
+	arena_deinit(a);
+
+	return 0;
+}