[FLINK-16834] Add flink-clients dependency to flink-walkthroughs

With inverting the dependency between flink-clients and flink-streaming-java,
it is now necessary to explicitly add the flink-clients dependency in order
to execute the walkthrough jobs from within the IDE.

This closes #11551.

flink-walkthroughs/flink-walkthrough-datastream-java/src/main/resources/archetype-resources/pom.xml

@@ -66,6 +66,12 @@ under the License.
 			<version>${flink.version}</version>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-clients_${scala.binary.version}</artifactId>
+			<version>${flink.version}</version>
+			<scope>provided</scope>
+		</dependency>
 
 		<!-- Add connector dependencies here. They must be in the default scope (compile). -->
 

flink-walkthroughs/flink-walkthrough-datastream-scala/src/main/resources/archetype-resources/pom.xml

@@ -66,6 +66,12 @@ under the License.
 			<version>${flink.version}</version>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-clients_${scala.binary.version}</artifactId>
+			<version>${flink.version}</version>
+			<scope>provided</scope>
+		</dependency>
 
 		<!-- Add connector dependencies here. They must be in the default scope (compile). -->
 

flink-walkthroughs/flink-walkthrough-table-java/src/main/resources/archetype-resources/pom.xml

@@ -72,6 +72,12 @@ under the License.
 			<version>${flink.version}</version>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-clients_${scala.binary.version}</artifactId>
+			<version>${flink.version}</version>
+			<scope>provided</scope>
+		</dependency>
 
 		<!-- Table ecosystem -->
 		<dependency>

flink-walkthroughs/flink-walkthrough-table-scala/src/main/resources/archetype-resources/pom.xml

@@ -72,6 +72,12 @@ under the License.
 			<version>${flink.version}</version>
 			<scope>provided</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.flink</groupId>
+			<artifactId>flink-clients_${scala.binary.version}</artifactId>
+			<version>${flink.version}</version>
+			<scope>provided</scope>
+		</dependency>
 
 		<!-- Table ecosystem -->
 		<dependency>