Add sidecar metadata files

crates/pile-config/src/lib.rs

@@ -13,6 +13,10 @@ pub mod objectpath;
 
 pub static INIT_DB_TOML: &str = include_str!("./config.toml");
 
+fn default_true() -> bool {
+	true
+}
+
 #[test]
 #[expect(clippy::expect_used)]
 fn init_db_toml_valid() {
@@ -46,8 +50,21 @@ pub struct DatasetConfig {
 #[serde(tag = "type")]
 #[serde(rename_all = "lowercase")]
 pub enum Source {
-	/// A directory of FLAC files
-	Flac { path: OneOrMany<PathBuf> },
+	/// A directory files
+	Filesystem {
+		/// The directories to scan.
+		/// Must be relative.
+		#[serde(alias = "paths")]
+		path: OneOrMany<PathBuf>,
+
+		/// If true, all toml files are ignored.
+		/// Metadata can be added to any file using a {filename}.toml.
+		///
+		/// If false, toml files are treated as regular files
+		/// and sidecar metadata is disabled.
+		#[serde(default = "default_true")]
+		sidecars: bool,
+	},
 }
 
 //