Switch to Paper plugin

Author: APickledWalrus

src/main/resources/plugin.yml src/main/resources/paper-plugin.ymlsrc/main/resources/plugin.yml renamed to src/main/resources/paper-plugin.yml

@@ -1,8 +1,12 @@
 name: skript-gui
 main: io.github.apickledwalrus.skriptgui.SkriptGUI
 version: @version@
-api-version: 1.21
+api-version: '1.21.1'
 authors: [APickledWalrus]
 description: Enables the easy creation of advanced and organized GUIs with Skript.
 website: https://github.com/APickledWalrus/skript-gui
-softdepend: [Skript]
+dependencies:
+  server:
+    Skript:
+      load: BEFORE
+      required: false