pmvhaven backend fix

src/providers/mod.rs

@@ -50,6 +50,7 @@ pub static ALL_PROVIDERS: Lazy<HashMap<&'static str, DynProvider>> = Lazy::new(|
     m.insert("rule34gen", Arc::new(rule34gen::Rule34genProvider::new()) as DynProvider);
     m.insert("xxdbx", Arc::new(xxdbx::XxdbxProvider::new()) as DynProvider);
     m.insert("hqporner", Arc::new(hqporner::HqpornerProvider::new()) as DynProvider);
+    m.insert("pmvhaven", Arc::new(pmvhaven::PmvhavenProvider::new()) as DynProvider);
     // add more here as you migrate them
     m
 });