Add djls-conf dependency to djls-ide

The djls-ide crate now imports DiagnosticSeverity from djls-conf for
the to_lsp_severity conversion, so it needs djls-conf as a dependency.

Author: claude

crates/djls-ide/Cargo.toml

@@ -4,6 +4,7 @@ version = "0.0.0"
 edition = "2021"
 
 [dependencies]
+djls-conf = { workspace = true }
 djls-project = { workspace = true }
 djls-semantic = { workspace = true }
 djls-source = { workspace = true }