chore: update .gitignore with cmake output

darrachequesne · darrachequesne · commit 019742fcd592 · 2021-01-07T14:55:00.000+01:00
[skip ci]
diff --git a/.gitignore b/.gitignore
@@ -1,2 +1,9 @@
 build/
-**/*.user
+**/*.user
+
+CMakeCache.txt
+CMakeFiles/
+Makefile
+cmake_install.cmake
+install_manifest.txt
+libsioclient.a
