Yank out Bigtable hbase dependency for one ApiFutureUtils class (#184)

## Summary
Been working through a number of issues trying to successfully run Flink
jobs on our DataProc cluster due to class / version conflicts. A number
of these seem to stem from this library that brings in a lot of
dependencies like hadoop ipc libs etc. We pulled in this lib for one
class (ApiFutureUtils) that allows us to convert from BigTable's
ApiFuture to Java's ListenableFutures. I've chosen to fork this class
and yank out the lib dependency.

## Checklist
- [ ] Added Unit Tests
- [X] Covered by existing CI - Our bigTableKVStoreTest runs tests for
the various async apis which leverage this class
- [ ] Integration tested
- [ ] Documentation update



<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

## Release Notes

- **Dependency Management**
- Removed Google Cloud Bigtable HBase library dependency from project
configuration

- **New Features**
- Added utility method to convert Google Cloud API futures to Java
CompletableFutures

- **Refactor**
  - Removed specific Bigtable API utility import from implementation

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: piyush-zlai

build.sbt

@@ -224,7 +224,6 @@ lazy val cloud_gcp = project
     libraryDependencies += "org.json4s" %% "json4s-native" % "3.7.0-M11",
     libraryDependencies += "org.json4s" %% "json4s-core" % "3.7.0-M11",
     libraryDependencies += "org.yaml" % "snakeyaml" % "2.3",
-    libraryDependencies += "com.google.cloud.bigtable" % "bigtable-hbase-2.x" % "2.14.2",
     libraryDependencies ++= avro,
     libraryDependencies ++= spark_all_provided,
     dependencyOverrides ++= jackson,

cloud_gcp/src/main/scala/ai/chronon/integrations/cloud_gcp/ApiFutureUtils.scala

@@ -0,0 +1,33 @@
+package ai.chronon.integrations.cloud_gcp
+
+import com.google.api.core.ApiFuture
+import com.google.api.core.ApiFutureCallback
+import com.google.api.core.ApiFutures
+import com.google.common.util.concurrent.MoreExecutors
+
+import java.util.concurrent.CompletableFuture
+
+// Fork of the bigtable-hbase ApiFutureUtils class to avoid taking a dependency on bigtable-hbase for one class
+// BigTable hbase brings in a ton of dependencies that we don't need for this one class
+object ApiFutureUtils {
+  def toCompletableFuture[T](apiFuture: ApiFuture[T]): CompletableFuture[T] = {
+    val completableFuture: CompletableFuture[T] = new CompletableFuture[T]() {
+      override def cancel(mayInterruptIfRunning: Boolean): Boolean = {
+        val result: Boolean = apiFuture.cancel(mayInterruptIfRunning)
+        super.cancel(mayInterruptIfRunning)
+        result
+      }
+    }
+    val callback: ApiFutureCallback[T] = new ApiFutureCallback[T]() {
+      override def onFailure(throwable: Throwable): Unit = {
+        completableFuture.completeExceptionally(throwable)
+      }
+
+      override def onSuccess(t: T): Unit = {
+        completableFuture.complete(t)
+      }
+    }
+    ApiFutures.addCallback(apiFuture, callback, MoreExecutors.directExecutor)
+    completableFuture
+  }
+}

cloud_gcp/src/main/scala/ai/chronon/integrations/cloud_gcp/BigTableKVStoreImpl.scala

@@ -29,7 +29,6 @@ import com.google.cloud.bigtable.data.v2.models.Query
 import com.google.cloud.bigtable.data.v2.models.Range.ByteStringRange
 import com.google.cloud.bigtable.data.v2.models.RowMutation
 import com.google.cloud.bigtable.data.v2.models.{TableId => BTTableId}
-import com.google.cloud.bigtable.hbase2_x.ApiFutureUtils
 import com.google.protobuf.ByteString
 import org.slf4j.Logger
 import org.slf4j.LoggerFactory