MaimMim Man in the middle minetest interceptor

- prototype
- between client and server, allow to capture all exchanges and potentially change them
- created to capture server maps in laby
- first test get only MapBlock, support version serialization version 28
  - prepartion for 29 with zstd but untested.

build.xml

@@ -10,8 +10,11 @@
   <property name="src" location="java"/>
   <property name="build" location="build"/>
   <property name="dist"  location="dist"/>
-  <!-- Fill me please / todo -->
+  <!-- Fill me please / todo 
+       see fetch_dependencies
+  -->
   <property name="artgraphicslib" value="artgaphics-0.2.0"/>
+  <property name="zstd-jnilib" value="zstd-jni-1.5.2-2"/>
   <target name="gather_project_params">
     <!-- original source parameter is in project_params project_version -->
     <loadfile property="distversion" srcfile="${basedir}/project_params">
@@ -36,7 +39,7 @@
   <target name="compile" depends="init"
         description="compile the source " >
     <!-- Compile the java code from ${src} into ${build} -->
-    <javac srcdir="${src}" destdir="${build}" includeantruntime="false" classpath="libs/${artgraphicslib}.jar">
+    <javac srcdir="${src}" destdir="${build}" includeantruntime="false" classpath="libs/${artgraphicslib}.jar:libs/${zstd-jnilib}.jar">
       <exclude name="org/artisanlogiciel/games/javafx/*"/>
       <compilerarg value="-Xlint:deprecation,unchecked" />
     </javac>