Add description about *.CMF (Creative Music File) (#16)

Author: mywave82

_library_formats/CreativeMusicFormat.html

@@ -0,0 +1,19 @@
+---
+filename: CTMF.zip
+flags: "A D PM "
+extension: .CMF
+desc: Creative Music Format
+---
+<p>
+This is a file format made by Creative Labs based on MIDI, but with a different header and includes OPL instruments in SBI format (stored without SBI header).
+Creative Labs never released an official editor, so to make CMF files the process is to convert file from other file formats like MIDI and SBI into CMF.
+</p>
+
+<p>
+<a href="https://modland.com/pub/modules/Ad%20Lib/Creative%20Music%20File/">modland.com music archive</a><br />
+<a href="https://modland.com/pub/software/players/DOS/Creative%20Music%20File%20Player/">modland.com player#1 archive</a><br />
+<a href="https://modland.com/pub/software/players/DOS/PlayCMF/">modland.com player#2 archive</a><br />
+<a href="http://www.vgmpf.com/Wiki/index.php?title=CMF">VGMPF wiki</a><br />
+<a href="https://moddingwiki.shikadi.net/wiki/CMF_Format">shikadi wiki</a><br />
+<a href="https://en.wikipedia.org/wiki/Creative_Music_File">Wikipedia</a><br />
+</p>