add .gitignore for build artifacts and autotools output

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1,52 @@
+# Build outputs
+*.o
+*.lo
+*.la
+*.pc
+*.map
+
+# Libtool
+.libs/
+.deps/
+.dirstamp
+libtool
+ltmain.sh
+
+# Autotools generated
+Makefile
+config.h
+config.h.in~
+config.log
+config.status
+config-paths.h
+stamp-h1
+autom4te.cache/
+
+# Generated Wayland protocol headers
+*-protocol.h
+protocols/
+
+# Generated configure outputs
+configure
+
+# Test binaries
+test_xparse
+tests/test_geom
+tests/test_x11_event
+
+# Misc
+bookmarks.html
+WPrefs.app/WPrefs.desktop
+WindowMaker/Defaults/WMRootMenu
+WindowMaker/Defaults/WMState
+WindowMaker/Defaults/WMWindowAttributes
+WindowMaker/Defaults/WindowMaker
+WindowMaker/IconSets/Default.iconset
+WindowMaker/appearance.menu
+WindowMaker/appearance.menu.fy
+WindowMaker/appearance.menu.nl
+WindowMaker/menu
+WindowMaker/menu.*
+WindowMaker/plmenu
+WindowMaker/plmenu.*
+WindowMaker/wmmacros