updated gitignore with temporary files

Author: jkrech

.gitignore

@@ -51,10 +51,20 @@ Module.symvers
 Mkfile.old
 dkms.conf
 
+# CMSIS Solution files and folders not to be tracked
+# default directory of build artifacts
 **/out
+# directory containing intermediate files to be regenerated
+**/tmp
+# 
 .clangd
-*.cbuild-idx.yml
+# Update config files must be merged before commit
+*.update@*
 *.cbuild.yml
-*.cprj
+*.cbuild-idx.yml
+*.cbuild-run.yml
+*.cbuild-set.yml
+# RTE_Components.h files are always regenerated and must not be checked in
 RTE_Components.h
-**/tmp
+# outdated file types
+*.cprj