Add .gitignore

.gitignore

@@ -0,0 +1,42 @@
+.libs/
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache/
+compile
+config.guess
+config.h
+config.h.in
+config.log
+config.status
+config.sub
+configure
+depcomp
+doc/Doxyfile
+doc/doxygen-build.stamp
+doc/html/
+doc/latex/
+examples/.deps/
+examples/.dirstamp
+examples/.libs/
+examples/rnnoise_demo
+install-sh
+libtool
+ltmain.sh
+m4/libtool.m4
+m4/ltoptions.m4
+m4/ltsugar.m4
+m4/ltversion.m4
+m4/lt~obsolete.m4
+missing
+package_version
+rnnoise-uninstalled.pc
+rnnoise.pc
+src/.deps/
+src/.dirstamp
+src/.libs/
+stamp-h1
+**/*.o
+**/*.lo
+**/*.la
+.vscode/