Add optional OpenTelemetry Netty server instrumentation

- Update lys.version to 2026.04.14

- Add optional compileOnly dependency on opentelemetry-netty-4.1 in rbcs-server

- Add runtime guard to only activate instrumentation when OTel classes are on classpath

- Insert OTel combined handler after HttpServerCodec in the Netty pipeline

- Add requires-static JPMS directives for optional module support

- Add enableTelemetry config attribute to rbcs:server with default false

- Update Configuration DTO, XSD schema, Parser, Serializer, and all tests

rbcs-api/.classpath

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" output="bin/main" path="src/main/java">
+		<attributes>
+			<attribute name="gradle_scope" value="main"/>
+			<attribute name="gradle_used_by_scope" value="main,test"/>
+		</attributes>
+	</classpathentry>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-25/"/>
+	<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
+	<classpathentry kind="output" path="bin/default"/>
+</classpath>

rbcs-api/.project

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>rbcs-api</name>
+	<comment>Project rbcs-api created by Buildship.</comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+		<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
+	</natures>
+	<filteredResources>
+		<filter>
+			<id>1777370776935</id>
+			<name></name>
+			<type>30</type>
+			<matcher>
+				<id>org.eclipse.core.resources.regexFilterMatcher</id>
+				<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
+			</matcher>
+		</filter>
+	</filteredResources>
+</projectDescription>

rbcs-api/.settings/org.eclipse.buildship.core.prefs

@@ -0,0 +1,2 @@
+connection.project.dir=..
+eclipse.preferences.version=1

rbcs-api/.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,4 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=25
+org.eclipse.jdt.core.compiler.compliance=25
+org.eclipse.jdt.core.compiler.source=25

rbcs-api/src/main/java/net/woggioni/rbcs/api/Configuration.java

@@ -16,6 +16,7 @@ import java.util.stream.Collectors;
 
 @Value
 public class Configuration {
+    boolean enableTelemetry;
     String host;
     int port;
     boolean proxyProtocolEnabled;
@@ -150,6 +151,7 @@ public class Configuration {
     }
 
     public static Configuration of(
+            boolean enableTelemetry,
             String host,
             int port,
             boolean proxyProtocolEnabled,
@@ -166,6 +168,7 @@ public class Configuration {
             Tls tls
     ) {
         return new Configuration(
+                enableTelemetry,
                 host,
                 port,
                 proxyProtocolEnabled,