feat: Add bundle proto building (#271)

* Add bundle.proto.

* Generated from proto.

* Reformatted.

* Manual changes to add proto, build rule and dependencies.

* Auto generated contents

* Remove unused dependencies.

* Revert files unrelated to bundles.

* Use SDK version management and other changes.

pom.xml

@@ -209,6 +209,7 @@
   <modules>
     <module>proto-google-cloud-firestore-admin-v1</module>
     <module>proto-google-cloud-firestore-v1</module>
+    <module>proto-google-cloud-firestore-bundle-v1</module>
     <module>grpc-google-cloud-firestore-admin-v1</module>
     <module>grpc-google-cloud-firestore-v1</module>
     <module>google-cloud-firestore-admin</module>

proto-google-cloud-firestore-bundle-v1/pom.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<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>proto-google-cloud-firestore-bundle-v1</artifactId>
+    <version>2.0.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-firestore:current} -->
+
+    <name>proto-google-cloud-firestore-bundle-v1</name>
+    <description>PROTO library for proto-google-cloud-firestore-bundle-v1</description>
+    <parent>
+        <groupId>com.google.cloud</groupId>
+        <artifactId>google-cloud-firestore-parent</artifactId>
+        <version>2.0.1-SNAPSHOT</version><!-- {x-version-update:google-cloud-firestore-parent:current} -->
+    </parent>
+    <dependencies>
+        <dependency>
+            <groupId>com.google.protobuf</groupId>
+            <artifactId>protobuf-java</artifactId>
+            <scope>compile</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.google.api.grpc</groupId>
+            <artifactId>proto-google-cloud-firestore-v1</artifactId>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>flatten-maven-plugin</artifactId>
+            </plugin>
+        </plugins>
+    </build>
+    <profiles>
+        <profile>
+            <id>java9</id>
+            <activation>
+                <jdk>[9,)</jdk>
+            </activation>
+            <dependencies>
+                <dependency>
+                    <groupId>javax.annotation</groupId>
+                    <artifactId>javax.annotation-api</artifactId>
+                </dependency>
+            </dependencies>
+        </profile>
+    </profiles>
+</project>