[HUDI-1089] Refactor hudi-client to support multi-engine (#1827)

- This change breaks `hudi-client` into `hudi-client-common` and `hudi-spark-client` modules 
- Simple usages of Spark using jsc.parallelize() has been redone using EngineContext#map, EngineContext#flatMap etc
- Code changes in the PR, break classes into `BaseXYZ` parent classes with no spark dependencies living in `hudi-client-common`
- Classes on `hudi-spark-client` are named `SparkXYZ` extending the parent classes with all the Spark dependencies
- To simplify/cleanup, HoodieIndex#fetchRecordLocation has been removed and its usages in tests replaced with alternatives

Co-authored-by: Vinoth Chandar <vinoth@apache.org>

style/checkstyle.xml

@@ -46,10 +46,12 @@
         <property name="file" value="${checkstyle.suppressions.file}" default="checkstyle-suppressions.xml"/>
         <property name="optional" value="true"/>
     </module>
+    <module name="SuppressWarningsFilter" />
     <module name="TreeWalker">
         <module name="AvoidNestedBlocks">
             <property name="allowInSwitchCase" value="true"/>
         </module>
+        <module name="SuppressWarningsHolder"/>
         <module name="OuterTypeFilename"/>
         <module name="IllegalTokenText">
             <property name="tokens" value="STRING_LITERAL, CHAR_LITERAL"/>