pamtotiff, pbmtowbmp, pnmtotiff, pnmtotiffcmyk, tifftopnm, wbmptopbm: add pages (#11408)

Co-authored-by: Sebastiaan Speck <12570668+sebastiaanspeck@users.noreply.github.com>

pages/common/pnmtotiffcmyk.md

@@ -0,0 +1,16 @@
+# pnmtotiffcmyk
+
+> Convert a PNM image to a CMYK encoded TIFF.
+> More information: <https://netpbm.sourceforge.net/doc/pnmtotiffcmyk.html>.
+
+- Convert a PNM image to a CMYK encoded TIFF:
+
+`pnmtotiffcmyk {{path/to/input_file.pnm}} > {{path/to/output_file.tiff}}`
+
+- Specify the TIFF compression method:
+
+`pnmtotiffcmyk -{{none|packbits|lzw}} {{path/to/input_file.pnm}} > {{path/to/output_file.tiff}}`
+
+- Control the fill order:
+
+`pnmtotiffcmyk -{{msb2lsb|lsb2msb}} {{path/to/input_file.pnm}} > {{path/to/output_file.tiff}}`