Add syntax definition for CSV and TSV
| Language name | Separator | Extension | Properties |
|---|---|---|---|
| CSV | , (comma) | .csv | Ignored inside double-quoted fields |
| TSV | \t (TAB) | .tsv .tab | |
| CSV (semicolon) | ; (semicolon) | Ignored inside double-quoted fields | |
| CSV (whitespace) | whitespace | Consecutive whitespaces are merged | |
| CSV (pipe) | | (pipe) |