fix: impl default manually for mock project (#1779)

* fix: impl default manually for mock project

* chore: silence impossible to derive default lint

Co-authored-by: Georgios Konstantopoulos <me@gakonst.com>

ethers-solc/src/project_util/mock.rs

@@ -33,7 +33,7 @@ impl MockProjectSkeleton {
 }
 
 /// Represents a virtual project
-#[derive(Serialize, Default)]
+#[derive(Serialize)]
 pub struct MockProjectGenerator {
     /// how to name things
     #[serde(skip)]
@@ -362,6 +362,13 @@ impl MockProjectGenerator {
     }
 }
 
+#[allow(clippy::derivable_impls)]
+impl Default for MockProjectGenerator {
+    fn default() -> Self {
+        Self { name_strategy: Box::<SimpleNamingStrategy>::default(), inner: Default::default() }
+    }
+}
+
 impl From<MockProjectSkeleton> for MockProjectGenerator {
     fn from(inner: MockProjectSkeleton) -> Self {
         Self { inner, ..Default::default() }