Add mod config option for loose files

Just the field in the config file, for now.

crates/dtmm/src/state/data.rs

@@ -109,6 +109,7 @@ pub(crate) struct ModInfo {
     #[data(ignore)]
     pub resources: ModResourceInfo,
     pub depends: Vector<ModDependency>,
+    pub bundle: bool,
     #[data(ignore)]
     pub nexus: Option<NexusInfo>,
 }
@@ -129,6 +130,7 @@ impl ModInfo {
             version: cfg.version,
             enabled: false,
             packages,
+            bundle: cfg.bundle,
             image,
             categories: cfg.categories.into_iter().collect(),
             resources: ModResourceInfo {

crates/dtmt/src/cmd/migrate.rs

@@ -350,6 +350,7 @@ pub(crate) async fn run(_ctx: sdk::Context, matches: &ArgMatches) -> Result<()>
             localization: mod_file.localization,
         },
         depends: vec![ModDependency::ID(String::from("DMF"))],
+        bundle: true,
     };
 
     tracing::debug!(?dtmt_cfg);

lib/dtmt-shared/src/lib.rs

@@ -30,6 +30,17 @@ pub enum ModDependency {
     Config { id: String, order: ModOrder },
 }
 
+// A bit dumb, but serde doesn't support literal values with the
+// `default` attribute, only paths.
+fn default_true() -> bool {
+    true
+}
+
+// Similarly dumb, as the `skip_serializing_if` attribute needs a function
+fn is_true(val: &bool) -> bool {
+    *val
+}
+
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]
 pub struct ModConfig {
     #[serde(skip)]
@@ -51,6 +62,8 @@ pub struct ModConfig {
     pub resources: ModConfigResources,
     #[serde(default)]
     pub depends: Vec<ModDependency>,
+    #[serde(default = "default_true", skip_serializing_if = "is_true")]
+    pub bundle: bool,
 }
 
 pub const STEAMAPP_ID: u32 = 1361210;