[SETUPLIB][REACTOS][USETUP] Split FS-volume-specific functionality from partitions (#7258)

CORE-13525

This greatly helps in reducing code complexity in some areas: code that
previously iterated over all partitions of a given disk, just to find
which ones were partitioned and contained a valid file system, now just
have to iterate over mounted volumes.
See in particular, `lib/utils/osdetect.c` and `lib/fsutil.c` .

- Remove FORMATSTATE "Preformatted" enum value;
- Cleanup osdetect code after introducing Volume support;
- Some simplifications for FormatState.

- Differentiate between 'new' partition and 'new' volume:

  * "New" partition: it has been created and added in the cached list,
    but not yet actually written into the disk.

  * "New" volume: newly-created volume (may be backed by a partition or
    not), not yet formatted. May exist on either new, or not new partition,
    or elsewhere.

- Cache partition and volume NT device names.

  These do not change across repartitioning operations, as long as the
  partition or the filesystem volume hasn't been deleted/recreated.
  This avoids doing \Device\Harddisk%u\Partition%u sprintf's everytime
  we need to retrieve the given partition or volume device name.

  When a partition/fileysystem volume is "virtually" created (i.e. in
  the partition list, but not yet committed to disk and exposed to the
  OS), no device partition number and device name are available yet.
  In particular, validate that no manipulation of \Device\HarddiskM\Partition0
  (i.e. the whole disk) is being made.

base/setup/lib/utils/osdetect.h

@@ -1,9 +1,9 @@
 /*
  * PROJECT:     ReactOS Setup Library
- * LICENSE:     GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
+ * LICENSE:     GPL-2.0-or-later (https://spdx.org/licenses/GPL-2.0-or-later)
  * PURPOSE:     NT 5.x family (MS Windows <= 2003, and ReactOS)
  *              operating systems detection code.
- * COPYRIGHT:   Copyright 2017-2018 Hermes Belusca-Maito
+ * COPYRIGHT:   Copyright 2017-2024 Hermès Bélusca-Maïto <hermes.belusca-maito@reactos.org>
  */
 
 #pragma once
@@ -22,7 +22,7 @@ typedef struct _NTOS_INSTALLATION
     PCWSTR PathComponent;           // Pointer inside SystemNtPath.Buffer
     ULONG DiskNumber;
     ULONG PartitionNumber;
-    PPARTENTRY PartEntry;
+    PVOLENTRY Volume; // PVOLINFO
     WCHAR InstallationName[MAX_PATH];
     WCHAR VendorName[MAX_PATH];
     // CHAR Data[ANYSIZE_ARRAY];
@@ -31,7 +31,7 @@ typedef struct _NTOS_INSTALLATION
 // EnumerateNTOSInstallations
 PGENERIC_LIST
 CreateNTOSInstallationsList(
-    IN PPARTLIST List);
+    _In_ PPARTLIST PartList);
 
 /*
  * FindSubStrI(PCWSTR str, PCWSTR strSearch) :