Add Vim syntax highlighting

editor-support/vim/README.md

@@ -0,0 +1,20 @@
+# Vim support for `str`
+
+This directory provides Vim syntax highlighting and filetype detection for the `str` string manipulation language.
+
+## Installation
+
+### Manual Installation
+Copy the `ftdetect` and `syntax` directories into your Vim or Neovim configuration directory.
+
+**For Vim:**
+```bash
+cp -r editor-support/vim/ftdetect ~/.vim/
+cp -r editor-support/vim/syntax ~/.vim/
+```
+
+**For Neovim:**
+```bash
+cp -r editor-support/vim/ftdetect ~/.config/nvim/
+cp -r editor-support/vim/syntax ~/.config/nvim/
+```