dysk: add page (#13405)

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

pages/linux/dysk.md

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+# dysk
+
+> Display filesystem information in a table.
+> More information: <https://dystroy.org/dysk>.
+
+- Get a standard overview of your usual disks:
+
+`dysk`
+
+- Sort by free size:
+
+`dysk --sort free`
+
+- Include only HDD disks:
+
+`dysk --filter 'disk = HDD'`
+
+- Exclude SSD disks:
+
+`dysk --filter 'disk <> SSD'`
+
+- Display disks with high utilization or low free space:
+
+`dysk --filter 'use > 65% | free < 50G'`