sdelete, sdelete64: add page (#14027)

* sdelete, sdelete64: add page

* sdelete: fix style problems

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

* sdelete64: fix typo

---------

Co-authored-by: Wiktor Perskawiec <git@spageektti.cc>

pages/windows/sdelete.md

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+# sdelete
+
+> Securely delete file/directory from disk, or clean the free space on a volume/physical disk.
+> More information: <https://learn.microsoft.com/en-us/sysinternals/downloads/sdelete>.
+
+- Delete files with 3 [p]asses:
+
+`sdelete -p 3 {{path\to\file1 path\to\file2 ...}}`
+
+- Delete folders and its [s]ubdirectories with 1 pass (default):
+
+`sdelete -s {{path\to\directory1 path\to\directory2 ...}}`
+
+- Clean the free space of volume D: with 3 [p]asses:
+
+`sdelete -p 3 D:`
+
+- Clean the free space with [z]eros of physical disk 2, which should not contain any volumes to be cleaned:
+
+`sdelete -z 2`

pages/windows/sdelete64.md

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+# sdelete64
+
+> This command is the 64 bit version of `sdelete`.
+
+- View documentation for the original command:
+
+`tldr sdelete`