qmv, qcp: add page (#3458)

pages/common/qcp.md

@@ -0,0 +1,16 @@
+# qcp
+
+> Copy files with your favorite text editor.
+> More information: <https://www.nongnu.org/renameutils/>.
+
+- Copy a single file (invoke an editor with source on the left, target on the right):
+
+`qcp {{source_file}}`
+
+- Copy multiple JPG files:
+
+`qcp {{*.jpg}}`
+
+- Copy files, but swap the positions of the source and the target in the editor:
+
+`qcp --option swap {{*.jpg}}`