fix(packager): avoid panic when Cargo.toml was not found

closes #149

.changes/packager-panic-no-cargo-toml.md

@@ -0,0 +1,6 @@
+---
+"cargo-packager": "patch"
+"@crabnebula/packager": "patch"
+---
+
+Fix CLI failing with `Failed to read cargo metadata: cargo metadata` for non-rust projects.

bindings/packager/nodejs/schema.json

@@ -812,7 +812,7 @@
           }
         },
         "excludedLibs": {
-          "description": "List of globs of libraries to exclude from the final APpImage. For example, to exclude libnss3.so, you'd specify `libnss3*`",
+          "description": "List of globs of libraries to exclude from the final AppImage. For example, to exclude libnss3.so, you'd specify `libnss3*`",
           "type": [
             "array",
             "null"

bindings/packager/nodejs/src-ts/config.d.ts

@@ -451,7 +451,7 @@ export interface AppImageConfig {
     [k: string]: string;
   } | null;
   /**
-   * List of globs of libraries to exclude from the final APpImage. For example, to exclude libnss3.so, you'd specify `libnss3*`
+   * List of globs of libraries to exclude from the final AppImage. For example, to exclude libnss3.so, you'd specify `libnss3*`
    */
   excludedLibs?: string[] | null;
 }

crates/packager/schema.json

@@ -812,7 +812,7 @@
           }
         },
         "excludedLibs": {
-          "description": "List of globs of libraries to exclude from the final APpImage. For example, to exclude libnss3.so, you'd specify `libnss3*`",
+          "description": "List of globs of libraries to exclude from the final AppImage. For example, to exclude libnss3.so, you'd specify `libnss3*`",
           "type": [
             "array",
             "null"

crates/packager/src/cli/config.rs

@@ -108,7 +108,9 @@ pub fn load_configs_from_cargo_workspace(
     if let Some(manifest_path) = &manifest_path {
         metadata_cmd.manifest_path(manifest_path);
     }
-    let metadata = metadata_cmd.exec()?;
+    let Ok(metadata) = metadata_cmd.exec() else {
+        return Ok(Vec::new());
+    };
 
     let mut configs = Vec::new();
     for package in metadata.workspace_packages().iter() {