czkawka-cli: add page (#9477)

pages/common/czkawka-cli.md

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+# czkawka-cli
+
+> Command-line version of `czkawka` a multi-functional app to find duplicates, empty folders, similar images and much more.
+> More information: <https://github.com/qarmin/czkawka>.
+
+- List duplicate or similar files in specific directories:
+
+`czkawka-cli {{dup|image}} --directories {{path/to/directory1 path/to/directory2 ...}}`
+
+- Find duplicate files in specific directories and delete them (default: `NONE`):
+
+`czkawka-cli dup --directories {{path/to/directory1 path/to/directory2 ...}} --delete-method {{AEN|AEO|ON|OO|HARD|NONE}}`