Derive .gitignore file contents from GitHub templates

Author: tuguzT

.gitignore

@@ -1,7 +1,3 @@
-## IDEs
-.vscode
-
-
 # Generated by Cargo
 # will have compiled files and executables
 debug/
@@ -16,3 +12,13 @@ Cargo.lock
 
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
+
+# RustRover
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+.idea/
+
+# VS Code
+.vscode/