tools/.gitignore: Add missing tools

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

tools/.gitignore

@@ -3,6 +3,7 @@
 /bisect.need
 /crypto_bench
 /cws2fws
+/enum_options
 /fourcc2pixfmt
 /ffescape
 /ffeval
@@ -12,8 +13,10 @@
 /pktdumper
 /probetest
 /qt-faststart
+/scale_slice_test
 /sidxindex
 /trasher
 /seek_print
 /uncoded_frame
+/venc_data_dump
 /zmqsend