clang-tidy: Fix all remaining misc-include-cleaner violations

- Remove unused includes
- Add common false positive headers to misc-include-cleaner.IgnoreHeaders
- Add IWYU pragma keep for uncommon false positive headers

src/basic/string-table.h

@@ -1,7 +1,8 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
-
 #pragma once
 
+#include <stdio.h>
+
 #include "basic-forward.h"
 
 const char* string_table_lookup_to_string(const char * const *table, size_t len, ssize_t i) _const_;