vim-patch:9.0.2071: objdump files not recognized

Problem:  objdump files not recognized
Solution: detect *.objdump files, add a filetype plugin

Added the objdump file/text format

closes: vim/vim#13425

10407df7a9

Co-authored-by: Colin Kennedy <colinvfx@gmail.com>

runtime/ftplugin/objdump.vim

@@ -0,0 +1,14 @@
+" Vim filetype plugin file
+" Language:     Objdump
+" Maintainer:   Colin Kennedy <colinvfx@gmail.com>
+" Last Change:  2023 October 25
+
+if exists("b:did_ftplugin")
+  finish
+endif
+
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setlocal cms<"
+
+setlocal commentstring=#\ %s