Project Types, Code Cleanup, and Rename Mods -> Projects (#192)

* Initial work for modpacks and project types

* Code cleanup, fix some issues

* Username route getting, remove pointless tests

* Base validator types + fixes

* Fix strange IML generation

* Multiple hash requests for version files

* Fix docker build (hopefully)

* Legacy routes

* Finish validator architecture

* Update rust version in dockerfile

* Added caching and fixed typo (#203)

* Added caching and fixed typo

* Fixed clippy error

* Removed log for cache

* Add final validators, fix how loaders are handled and add icons to tags

* Fix search module

* Fix parts of legacy API not working

Co-authored-by: Redblueflame <contact@redblueflame.com>

src/validate/fabric.rs

@@ -0,0 +1,48 @@
+use crate::validate::{SupportedGameVersions, ValidationError, ValidationResult};
+use chrono::{DateTime, NaiveDateTime, Utc};
+use std::io::Cursor;
+use zip::ZipArchive;
+
+pub struct FabricValidator {}
+
+impl super::Validator for FabricValidator {
+    fn get_file_extensions<'a>(&self) -> &'a [&'a str] {
+        &["jar", "zip"]
+    }
+
+    fn get_project_types<'a>(&self) -> &'a [&'a str] {
+        &["mod"]
+    }
+
+    fn get_supported_loaders<'a>(&self) -> &'a [&'a str] {
+        &["fabric"]
+    }
+
+    fn get_supported_game_versions(&self) -> SupportedGameVersions {
+        // Time since release of 18w49a, the first fabric version
+        SupportedGameVersions::PastDate(DateTime::<Utc>::from_utc(
+            NaiveDateTime::from_timestamp(1543969469, 0),
+            Utc,
+        ))
+    }
+
+    fn validate(
+        &self,
+        archive: &mut ZipArchive<Cursor<&[u8]>>,
+    ) -> Result<ValidationResult, ValidationError> {
+        archive.by_name("fabric.mod.json")?;
+
+        if !archive
+            .file_names()
+            .any(|name| name.ends_with("refmap.json") || name.ends_with(".class"))
+        {
+            return Ok(ValidationResult::Warning(
+                "Fabric mod file is a source file!".to_string(),
+            ));
+        }
+
+        //TODO: Check if file is a dev JAR?
+
+        Ok(ValidationResult::Pass)
+    }
+}