core: git: alphabetize entries in .gitignore and add entry for .clangd

.gitignore

@@ -1,59 +1,60 @@
 # file types to ignore
 .*
-!/.packit.yaml
+!*.gitattributes
+!*.gitignore
 !/.clang-format
 !/.clang-tidy
 !/.git-blame-ignore-revs
 !/.gitattributes
+!/.github/
 !/.gitignore
 !/.gitmodules
+!/.packit.yaml
 !/.pre-commit-config.yaml
 !/.pylintrc
-!/.github/
 !/contrib/.vscode/
-!*.gitattributes
-!*.gitignore
+*.clangd
 *.DS_Store
-*.pyc
-*.obj
-*.lib
-*.pch
-*.vcproj
-*.kdev4
-*.exp
 *.dep
+*.exp
+*.kdev4
+*.lib
 *.manifest
 *.o
+*.obj
 *.orig
 *.output
+*.pch
+*.pyc
+*.vcproj
 # Ignore .db files created by Qt Designer when editing .ui files
 *.db
-qrc_*.cpp
-BuildLog.htm
-cmake_install.cmake
-*~
-CMakeFiles/
 *qrc.depends
-ui_*.h
-moc_*.cpp
-Makefile
+*~
+BuildLog.htm
 CMakeCache.txt
+CMakeFiles/
 CMakeLists.txt.user
+Makefile
+cmake_install.cmake
 config.h
 install_manifest.txt
-/bin/
+moc_*.cpp
+qrc_*.cpp
+ui_*.h
+/.vscode/
 /ALL_BUILD.dir/
-/doc/
-/lib/
 /Mod/
 /ZERO_CHECK.dir/
-/build/
+/bin/
 /build-*/
+/build/
 /cmake-build*/
-/src/Tools/offlinedoc/localwiki/
-/src/Tools/offlinedoc/*.txt
 /conda/environment.yml
-/.vscode/
+/doc/
+/lib/
+/src/Tools/offlinedoc/*.txt
+/src/Tools/offlinedoc/localwiki/
 OpenSCAD_rc.py
 tags
 /CMakeUserPresets.json
@@ -63,10 +64,10 @@ compile_commands.json
 *.sublime-workspace
 
 # crowdin file
+files_to_translate.txt
 src/Tools/freecad.zip
 tsupdate_stderr.log
 tsupdate_stdout.log
-files_to_translate.txt
 # pixi environments
-.pixi
 *.egg-info
+.pixi