fix: move matrix.b to appl/wm/ so it installs as /dis/wm/matrix.dis

GUI apps belong in appl/wm/, not appl/cmd/. This makes Matrix
launchable from Lucifer like editor, shell, and wallet.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: pdfinn

appl/cmd/mkfile

@@ -104,7 +104,6 @@ TARG=\
 	lucictx.dis\
 	lucipres.dis\
 	luciuisrv.dis\
-	matrix.dis\
 	m4.dis\
 	man2html.dis\
 	man2txt.dis\

appl/cmd/matrix.b appl/wm/matrix.bappl/cmd/matrix.b renamed to appl/wm/matrix.b

@@ -15,6 +15,7 @@ TARG=\
 	settings.dis\
 	editor.dis\
 	fractals.dis\
+	matrix.dis\
 	shell.dis\
 	view.dis\
 	wm.dis\
@@ -35,6 +36,7 @@ SYSMODULES=\
 	keyboard.m\
 	lucitheme.m\
 	math.m\
+	matrix.m\
 	menu.m\
 	menuhit.m\
 	plumbmsg.m\