Add reCAPTCHA Enterprise client (#5027)

* Add reCAPTCHA Enterprise client

* Fix parent versions

* Fix initial version in the README and year in new synth.py

google-api-grpc/grpc-google-cloud-recaptchaenterprise-v1beta1/pom.xml

@@ -0,0 +1,53 @@
+<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>
+  <artifactId>grpc-google-cloud-recaptchaenterprise-v1beta1</artifactId>
+  <version>0.0.1-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-recaptchaenterprise-v1beta1:current} -->
+  <name>grpc-google-cloud-recaptchaenterprise-v1beta1</name>
+  <description>GRPC library for grpc-google-cloud-recaptchaenterprise-v1beta1</description>
+  <parent>
+    <groupId>com.google.api.grpc</groupId>
+    <artifactId>google-api-grpc</artifactId>
+    <version>0.54.1-SNAPSHOT</version><!-- {x-version-update:google-api-grpc:current} -->
+  </parent>
+  <dependencies>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-stub</artifactId>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>io.grpc</groupId>
+      <artifactId>grpc-protobuf</artifactId>
+      <scope>compile</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.google.api.grpc</groupId>
+      <artifactId>proto-google-cloud-recaptchaenterprise-v1beta1</artifactId>
+      <scope>compile</scope>
+    </dependency>
+  </dependencies>
+
+  <reporting>
+    <plugins>
+      <plugin>
+        <groupId>org.apache.maven.plugins</groupId>
+        <artifactId>maven-javadoc-plugin</artifactId>
+        <version>3.1.0</version>
+        <configuration>
+          <show>protected</show>
+          <nohelp>true</nohelp>
+          <doclint>none</doclint>
+          <splitindex>true</splitindex>
+          <offlineLinks>
+            <offlineLink>
+              <url>${project.javadoc.protobufBaseURL}</url>
+              <location>../../../../proto-google-cloud-recaptchaenterprise-v1beta1/target/site/apidocs/</location>
+            </offlineLink>
+          </offlineLinks>
+        </configuration>
+      </plugin>
+    </plugins>
+  </reporting>
+</project>