Refactor pom.xml to use maven-antrun-plugin for file copying and update README.md with new JavaDocs link and explanation on Mojang and Spigot maps separation

Author: LoneDev6

.mvn-exec/CopyFile.bat

@@ -24,38 +24,24 @@
             <build>
                 <plugins>
                     <plugin>
-                        <groupId>org.codehaus.mojo</groupId>
-                        <artifactId>exec-maven-plugin</artifactId>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-antrun-plugin</artifactId>
                         <version>3.1.0</version>
                         <executions>
                             <execution>
-                                <id>RemoveMetaInf</id>
                                 <phase>package</phase>
                                 <configuration>
-                                    <executable>cmd</executable>
-                                    <workingDirectory>${project.parent.basedir}</workingDirectory>
-                                    <arguments>
-                                        <argument>/C</argument>
-                                        <argument>.mvn-exec\RemoveMetaInf.bat</argument>
-                                    </arguments>
+                                    <target>
+                                        <!-- Copy JAR to multiple directories -->
+                                        <copy file="${basedir}/../output/${project.parent.artifactId}.jar" todir="C:/Progetti/Minecraft/TestServer/1.20/plugins/"/>
+                                        <copy file="${basedir}/../output/${project.parent.artifactId}.jar" todir="C:/Progetti/Minecraft/TestServer/1.20.6/plugins/"/>
+                                        <copy file="${basedir}/../output/${project.parent.artifactId}.jar" todir="C:/Progetti/Minecraft/TestServer/1.21.1/plugins/"/>
+                                        <copy file="${basedir}/../output/${project.parent.artifactId}.jar" todir="C:/Progetti/Minecraft/TestServer/1.21.3/plugins/"/>
+                                        <copy file="${basedir}/../output/${project.parent.artifactId}.jar" todir="C:/Progetti/Minecraft/TestServer/1.21.4/plugins/"/>
+                                    </target>
                                 </configuration>
                                 <goals>
-                                    <goal>exec</goal>
-                                </goals>
-                            </execution>
-                            <execution>
-                                <id>CopyFile</id>
-                                <phase>package</phase>
-                                <configuration>
-                                    <executable>cmd</executable>
-                                    <workingDirectory>${project.parent.basedir}</workingDirectory>
-                                    <arguments>
-                                        <argument>/C</argument>
-                                        <argument>.mvn-exec\CopyFile.bat</argument>
-                                    </arguments>
-                                </configuration>
-                                <goals>
-                                    <goal>exec</goal>
+                                    <goal>run</goal>
                                 </goals>
                             </execution>
                         </executions>

.mvn-exec/RemoveMetaInf.bat

@@ -1,7 +1,7 @@
 # FastNBT
 <hr>
 <h3 align="center">
-<a href="https://lonedev6.github.io/FastNBT/">☕ JavaDocs</a>
+<a href="https://lonedev6.github.io/FastNBT/beer/devs/fastnbt/nms/nbt/package-summary.html">☕ JavaDocs</a>
 </h3>
 <hr> 
 
@@ -122,6 +122,12 @@ libraries:
 
 Should be all.
 
+
+## Why the Mojang and Spigot maps are separated?
+Paper user Mojang mapped JAR. At the same time Paper itself remaps the plugins JARs at runtime, thinking that they
+all are Spigot mapped. This causes issues because it remaps the already remapped classes.
+This is the only solution I found to avoid this issue, in the future I might come up with something else.
+
 # LoneDev's Notes
 
 ## How to publish to the maven repository
@@ -132,7 +138,7 @@ Should be all.
 
 ## Editing to the repository
 - Clone it
-- Change paths in `.mvn-exec/CopyFile.bat` and `RemoveMetaInf.bat` based on your directories
+- Change paths in `pom.xml` -> `maven-antrun-plugin` based on your directories, or comment the plugin if you don't need it
 - Make your changes
 - Run `mvn install` in order to access the plugin as dependency in your projects
 - Run Maven `clean package` and get the generated jar from `output` folder