Adds a lot of empty classes with todos

Adds commands and permissions to plugin.yml
Uses the Spigot API instead of the Paper API
Reduces the Java version to 16, just in case.
Adds a lot of empty classes to show the intended plugin structure.

pom.xml

@@ -13,7 +13,7 @@
 
     <description>A plugin for dropper mini-games</description>
     <properties>
-        <java.version>17</java.version>
+        <java.version>16</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 
@@ -55,19 +55,15 @@
 
     <repositories>
         <repository>
-            <id>papermc-repo</id>
-            <url>https://repo.papermc.io/repository/maven-public/</url>
-        </repository>
-        <repository>
-            <id>sonatype</id>
-            <url>https://oss.sonatype.org/content/groups/public/</url>
+            <id>spigot-repo</id>
+            <url>https://hub.spigotmc.org/nexus/content/repositories/snapshots/</url>
         </repository>
     </repositories>
 
     <dependencies>
         <dependency>
-            <groupId>io.papermc.paper</groupId>
-            <artifactId>paper-api</artifactId>
+            <groupId>org.spigotmc</groupId>
+            <artifactId>spigot-api</artifactId>
             <version>1.19.4-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>