Update KiCad.gitignore

Author: krishnans2006

KiCad.gitignore

@@ -8,10 +8,13 @@
 *.kicad_pcb-bak
 *.kicad_sch-bak
 *-backups
-*.kicad_prl
-*.sch-bak
+*-cache*
+*-bak
+*-bak*
 *~
+~*
 _autosave-*
+\#auto_saved_files\#
 *.tmp
 *-save.pro
 *-save.kicad_pcb
@@ -33,4 +36,5 @@ fp-info-cache
 # Archived Backups (KiCad 6.0)
 **/*-backups/*.zip
 
-\#auto_saved_files\#
+# Local project settings
+*.kicad_prl