Add .gitignore

Copied from ros-navigation/navigation2

Author: adivardi

.gitignore

@@ -0,0 +1,56 @@
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Colcon output
+build
+log
+install
+
+# Visual Studio Code files
+.vscode
+
+# Eclipse project files
+.cproject
+.project
+.pydevproject
+
+# Python artifacts
+__pycache__/
+*.py[cod]
+.ipynb_checkpoints
+
+sphinx_doc/_build
+
+# CLion artifacts
+.idea
+cmake-build-debug/
+
+# doxygen docs
+doc/html/