Rename basic-forward.h, sd-forward.h, and shared-forward.h to forward.h

Follow-up for 74d392ed1b.

src/cryptsetup/cryptsetup-keyfile.h

@@ -1,6 +1,6 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "shared-forward.h"
+#include "forward.h"
 
 int find_key_file(const char *key_file, char **search_path, const char *bindname, struct iovec *ret_key);

src/cryptsetup/cryptsetup-pkcs11.h

@@ -1,8 +1,8 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
+#include "forward.h"
 #include "pkcs11-padding.h"
-#include "shared-forward.h"
 
 int decrypt_pkcs11_key(
                 const char *volume_name,

src/cryptsetup/cryptsetup-tokens/cryptsetup-token-util.h

@@ -3,7 +3,7 @@
 #pragma once
 
 #include "cryptsetup-util.h"
-#include "shared-forward.h"
+#include "forward.h"
 
 /* crypt_dump() internal indentation magic */
 #define CRYPT_DUMP_LINE_SEP "\n\t            "

src/cryptsetup/cryptsetup-tokens/cryptsetup-token.h

@@ -1,7 +1,7 @@
 /* SPDX-License-Identifier: LGPL-2.1-or-later */
 #pragma once
 
-#include "shared-forward.h"
+#include "forward.h"
 
 /* for more information see libcryptsetup.h crypt-tokens section */
 

src/cryptsetup/cryptsetup-tokens/luks2-pkcs11.h

@@ -2,8 +2,8 @@
 
 #pragma once
 
+#include "forward.h"
 #include "pkcs11-util.h"
-#include "shared-forward.h"
 
 int acquire_luks2_key(
                 struct crypt_device *cd,