ignore some files

Signed-off-by: Mattia Rizzi <mattia.rizzi@cern.ch>

.gitignore

+*.*\#
+\#*
+.\#*
+*.*~
+work
+*.wlf
+*.vstf
+*.patch
+modelsim.ini
+*.html
+*.bin
+*.elf
+*.o
+*.ko
+*.mod.c
+.*.o.cmd
+.*.ko.cmd
+*.mod.d
+*.o.d
+*.tmp
+.tmp_versions
+modules.order
+Module.symvers
+\#*
+*~
+GTAGS
+GPATH
+GRTAGS
+Makefile.specific
+compile_commands.json