FEAT: created reserve(Vec8_t* ptr, const size_t max_size) to set a specific size for a vector over just a default size

src/main.c

@@ -54,6 +54,14 @@ create(const Vec8_t* input)
 	return vec;
 }
 
+char* reserve(Vec8_t* ptr, const size_t max_size) {
+        char* res = reallocf(ptr, max_size * sizeof(char));
+        ptr->arr = res;
+        ptr->capacity = max_size * sizeof(char);
+        if(ptr->size > max_size) ptr->size = max_size;
+        return ptr->arr;
+}
+
 Vec8_t*
 shrink_to_fit(const Vec8_t* ptr) {
         /* Create a new empty heap