Backport some POM changes needed for the release

pom.xml

@@ -1,4 +1,6 @@
-<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 	<groupId>io.deephaven</groupId>
 	<artifactId>deephaven-benchmark</artifactId>
@@ -103,6 +105,39 @@
 				</executions>
 			</plugin>
 			<plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-source-plugin</artifactId>
+        <version>3.3.1</version>
+        <executions>
+          <execution>
+            <id>attach-sources</id>
+            <phase>verify</phase>
+            <goals>
+              <goal>jar-no-fork</goal>
+            </goals>
+          </execution>
+        </executions>
+        </plugin>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-javadoc-plugin</artifactId>
+				<version>3.10.1</version>
+				<configuration>
+					<excludePackageNames>*.connect,*.controller,*.generator,*.jfr,*.metric,*.run,*.util</excludePackageNames>
+					<show>public</show>
+					<nohelp>true</nohelp>
+				</configuration>
+				<executions>
+                <execution>
+                    <id>attach-javadocs</id>
+                    <phase>install</phase>
+                    <goals>
+                        <goal>jar</goal>
+                    </goals>
+                </execution>
+            </executions>
+			</plugin>
+			<plugin>
 				<!-- For spotless to work on Windows, Set git config global 'core.autocrlf' to true -->
 				<groupId>com.diffplug.spotless</groupId>
 				<artifactId>spotless-maven-plugin</artifactId>