Add uc_strv_reverse

src/strvec.c

@@ -130,3 +130,14 @@ int uc_strv_append_all(struct UCStrv *restrict a, struct UCStrv *restrict b, int
     return 0;
 }
 
+void uc_strv_reverse(struct UCStrv *strv)
+{
+    for (size_t i = 0; i < strv->cnt / 2; i++) {
+
+        size_t k = strv->cnt - i - 1;
+        char *tmp = strv->strings[i];
+
+        strv->strings[i] = strv->strings[k];
+        strv->strings[k] = tmp;
+    }
+}