chore: break out bazel targets

Co-authored-by: Thomas Chow <[email protected]>

Author: tchow-zlai

spark/src/main/scala/ai/chronon/spark/stats/BUILD.bazel

@@ -0,0 +1,14 @@
+scala_library(
+    name = "lib",
+    srcs = glob(["src/main/scala/ai/chronon/spark/stats/**/*.scala"]),
+    format = select({
+        "//tools/config:scala_2_13": False,  # Disable for 2.13
+        "//conditions:default": True,  # Enable for other versions
+    }),
+    visibility = ["//visibility:public"],
+    deps = [
+        "//api:lib",
+        "//online:lib",
+        "//tools/build_rules/spark:spark-exec",
+    ],
+)

spark/src/main/scala/ai/chronon/spark/stats/CompareBaseJob.scala

@@ -17,14 +17,12 @@
 package ai.chronon.spark.stats
 
 import ai.chronon.api._
-import ai.chronon.online.{SparkConversions, fetcher, _}
+import ai.chronon.online._
 import ai.chronon.spark.Extensions._
-import ai.chronon.spark.TableUtils
-import ai.chronon.spark.TimedKvRdd
+import ai.chronon.spark.{TableUtils, TimedKvRdd}
 import org.apache.spark.sql.DataFrame
 import org.apache.spark.sql.types.DataType
-import org.slf4j.Logger
-import org.slf4j.LoggerFactory
+import org.slf4j.{Logger, LoggerFactory}
 
 import scala.collection.mutable.ListBuffer