[HUDI-3760] Adding capability to fetch Metadata Records by prefix (#5208)

- Adding capability to fetch Metadata Records by key prefix so that Data Skipping could fetch only Column Stats 
- Index records pertaining to the columns being queried by, instead of reading out whole Index.
- Fixed usages of HFileScanner in HFileReader. few code paths uses cached scanner if available. Other code paths uses its own HFileScanner w/ positional read. 

Brief change log
- Rebasing ColumnStatsIndexSupport to rely on HoodieBackedTableMetadata in lieu of reading t/h Spark DS
- Adding methods enabling key-prefix lookups to HoodiFileReader, HoodieHFileReader
- Wiring key-prefix lookup t/h LogRecordScanner impls
- Cleaning up HoodieHFileReader impl

Co-authored-by: sivabalan <n.siva.b@gmail.com>
Co-authored-by: Sagar Sumit <sagarsumit09@gmail.com>

hudi-client/hudi-spark-client/src/main/scala/org/apache/hudi/HoodieConversionUtils.scala

@@ -18,6 +18,8 @@
 
 package org.apache.hudi
 
+import org.apache.hudi.common.config.TypedProperties
+
 object HoodieConversionUtils {
 
   def toJavaOption[T](opt: Option[T]): org.apache.hudi.common.util.Option[T] =
@@ -26,4 +28,10 @@ object HoodieConversionUtils {
   def toScalaOption[T](opt: org.apache.hudi.common.util.Option[T]): Option[T] =
     if (opt.isPresent) Some(opt.get) else None
 
+  def toProperties(params: Map[String, String]): TypedProperties = {
+    val props = new TypedProperties()
+    params.foreach(kv => props.setProperty(kv._1, kv._2))
+    props
+  }
+
 }