Update validators again (#925)

* Update validators again

* fix tests + clippy

src/validate/neoforge.rs

@@ -0,0 +1,37 @@
+use crate::validate::{filter_out_packs, SupportedGameVersions, ValidationError, ValidationResult};
+use std::io::Cursor;
+use zip::ZipArchive;
+
+pub struct NeoForgeValidator;
+
+impl super::Validator for NeoForgeValidator {
+    fn get_file_extensions(&self) -> &[&str] {
+        &["jar", "zip"]
+    }
+
+    fn get_supported_loaders(&self) -> &[&str] {
+        &["forge"]
+    }
+
+    fn get_supported_game_versions(&self) -> SupportedGameVersions {
+        SupportedGameVersions::All
+    }
+
+    fn validate(
+        &self,
+        archive: &mut ZipArchive<Cursor<bytes::Bytes>>,
+    ) -> Result<ValidationResult, ValidationError> {
+        if archive.by_name("META-INF/mods.toml").is_err()
+            && archive.by_name("META-INF/neoforge.mods.toml").is_err()
+            && !archive.file_names().any(|x| x.ends_with(".class"))
+        {
+            return Ok(ValidationResult::Warning(
+                "No neoforge.mods.toml, mods.toml, or valid class files present for NeoForge file.",
+            ));
+        }
+
+        filter_out_packs(archive)?;
+
+        Ok(ValidationResult::Pass)
+    }
+}