Add language templates (Kotlin, Scala, Dart, R, Perl, Lua)

gitignore_generator/templates/languages/r.gitignore

@@ -0,0 +1,46 @@
+# History files
+.Rhistory
+.Rapp.history
+
+# Session Data files
+.RData
+.RDataTmp
+
+# User-specific files
+.Ruserdata
+
+# Example code in package build process
+*-Ex.R
+
+# Output files from R CMD build
+/*.tar.gz
+
+# Output files from R CMD check
+/*.Rcheck/
+
+# RStudio files
+.Rproj.user/
+*.Rproj
+
+# knitr and R markdown default cache directories
+*_cache/
+/cache/
+
+# Temporary files created by R
+tmp/
+
+# OS
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~