feat: add support for Fabric targeting Minecraft 1.20.1 (#217)

* Upgrade the Fabric version and rewrite the code.

* Migrate the completed code of version 1.19.2.

* fabric: some events.

* Updated open source license to Apache 2.0.

* Add Plan analyzer support.

* Fix build.

* `UnsupportedOperationException`

* More fabric implementation work, update to v3's structure

* Suppress compiler warnings

* Add commands, adjust registration order

* Inventory and ender chest data/serializers

* Update license headers

* Fixup shaded library relocations

* Fix build

* Potion effects & location serializers

* Catch `Files.createDirectory(path);` in `#getDataFolder`

* Update fabric.mod.json metadata, correct icon

* Events for Fabric (#218)

* Added apache commons pool2 dependency

A NoClassDefFoundError would get thrown without this dependency. Relocation appears to not work very well either, so it has been excluded for now

* Added in Item Pickup and Drop events and mixins

* Update husksync.mixins.json

* Switch drop item event to using Network Handler mixin

* Implemented even more events

- Interact block (place too)
- Interact Entity
- Use Item
- Block Break
- Player damage
- Inventory Click (handles drops)
- Player Commands

* Re-implement the dropItem mixin

* Set dropItem mixin as cancellable

* deps: Include all bukkit runtime deps

* fix/fabric: Supply AudienceProvider to `ConsoleUser` constructor

* docs: credit Fabric porters :)

* fix: Item deserialization now working

* refactor: Remove inventory debug log

* docs: Update `fabric.mod.json`

* refactor: update with upstream changes

* fix: dangling JD comment

* fix: config file reference fixes

* refactor: optimize imports, fix relocation

* refactor: move tag references to common

* refactor: use lombok for data / serializer methods

* fix: bad annotating

* refactor: adjust callback formatting

* fabric: bump deps, refactor to match main branch

* fabric: more serializer type work

* feat: register more fabric data serializers

also fixes a compile issue on bukkit, and refactors the JSON serializer to be in the common module

* feat: implement remaining Fabric serializers

* feat: add on-the-fly DFU for Fabric

Now auto-upgrades item data to support version bumps. Also improved the schema a lil' bit.

* feat: add missing mixins

* feat: implement toKeep/toDrop option on Fabric

* feat: apply stats on sync

* build: append fabric MC version to file name

* feat: add HuskSync API support for Fabric

Also updates the docs

* refactor: fixup a deprecation in the wrong spot

* refactor: optimize fabric item serializing in-line with Bukkit

* feat: implement viewer GUIs on Fabric

* docs: Fabric is in Alpha for now

---------

Co-authored-by: hanbings <hanbings@hanbings.io>
Co-authored-by: Stampede <carterblowers01@gmail.com>

common/src/main/java/net/william278/husksync/HuskSync.java

@@ -43,7 +43,6 @@ import net.william278.husksync.util.LegacyConverter;
 import net.william278.husksync.util.Task;
 import org.jetbrains.annotations.NotNull;
 
-import java.io.File;
 import java.io.InputStream;
 import java.text.SimpleDateFormat;
 import java.util.*;
@@ -86,7 +85,6 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
      *
      * @return the {@link RedisManager} implementation
      */
-
     @NotNull
     RedisManager getRedisManager();
 
@@ -122,7 +120,17 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
     List<Migrator> getAvailableMigrators();
 
     @NotNull
-    Map<Identifier, Data> getPlayerCustomDataStore(@NotNull OnlineUser user);
+    Map<UUID, Map<Identifier, Data>> getPlayerCustomDataStore();
+
+    @NotNull
+    default Map<Identifier, Data> getPlayerCustomDataStore(@NotNull OnlineUser user) {
+        if (getPlayerCustomDataStore().containsKey(user.getUuid())) {
+            return getPlayerCustomDataStore().get(user.getUuid());
+        }
+        final Map<Identifier, Data> data = new HashMap<>();
+        getPlayerCustomDataStore().put(user.getUuid(), data);
+        return data;
+    }
 
     /**
      * Initialize a faucet of the plugin.
@@ -156,14 +164,6 @@ public interface HuskSync extends Task.Supplier, EventDispatcher, ConfigProvider
      */
     InputStream getResource(@NotNull String name);
 
-    /**
-     * Returns the plugin data folder
-     *
-     * @return the plugin data folder as a {@link File}
-     */
-    @NotNull
-    File getDataFolder();
-
     /**
      * Log a message to the console
      *