add python generator file and spec

Author: Light2Dark

.gitignore

@@ -5,3 +5,4 @@ scripts/**.js
 dist
 .DS_Store
 !.vscode
+__marimo__

src/data/README.md

@@ -0,0 +1,16 @@
+# Generating SQL Dialects and Keywords
+
+Dialects enable CodeMirror to provide SQL syntax highlighting.
+
+Keywords allow CodeMirror to offer SQL autocompletion and display hover tooltips.
+
+| Database | How to Run Spec Script                  |
+| -------- | --------------------------------------- |
+| DuckDB   | `python src/data/duckdb/spec_duckdb.py` |
+
+> 💡 **Tip:** Update the script path to match your target SQL dialect.  
+> Running the script will automatically generate the keywords and types for the corresponding `*.ts` dialect file.
+
+> 🚀 **Quick Start:**  
+> To open and run the script interactively in marimo, use:  
+> `uvx marimo edit <path-to-script>`