Make sure all encodings are enabled for DF (#5720)

Its already enabled for benchmarks because `vortex-duckdb` makes sure to
enable it, but if a user only pulls DF they won't get all the encodings
unless they all pull `vortex` with the feature.

Signed-off-by: Adam Gutglick <[email protected]>

Author: AdamGS

vortex-datafusion/Cargo.toml

@@ -36,7 +36,7 @@ object_store = { workspace = true }
 tokio = { workspace = true, features = ["rt-multi-thread", "fs"] }
 tokio-stream = { workspace = true }
 tracing = { workspace = true, features = ["std", "attributes"] }
-vortex = { workspace = true, features = ["object_store", "tokio"] }
+vortex = { workspace = true, features = ["object_store", "tokio", "files"] }
 vortex-utils = { workspace = true, features = ["dashmap"] }
 
 [dev-dependencies]