add gitignore

Signed-off-by: huhui <huhui@sharkgulf.com>

.gitignore

@@ -0,0 +1,23 @@
+output
+Listings
+RTE
+EventRecorderStub.scvd
+JLinkSettings.ini
+version.txt
+JLinkLog.txt
+*.uvguix.*
+version.h
+version.cfg
+sw_build_info.h
+*.IAB
+*.IAD
+*.IMB
+*.IMD
+*.PFI
+*.PO
+*.PR
+*.PRI
+*.PS
+*.WK3
+*.SearchResults
+*.si4project