develop: enable all features for rust-analyzer (#463)

Co-authored-by: Etienne Bacher <[email protected]>

.vscode/settings.json

@@ -1,12 +1,9 @@
 {
     "rust-analyzer.linkedProjects": [
-        //"./extendr-api/Cargo.toml",
         "./src/rust/Cargo.toml",
-        //"py-polars"
     ],
-    //"rust-analyzer.cargo.features": "all",
+    "rust-analyzer.cargo.features": "all",
     "python.formatting.provider": "black",
-
     "cSpell.diagnosticLevel": "Hint",
     "cSpell.words": [
         "dataframe",
@@ -28,5 +25,4 @@
         "tzone",
         "unnest"
     ],
-
 }