[Improvement][style] Improve checkstyle import order and code style importer (#3368)

* [Improvement][style] Add code import style automatic formatter

* Update checkstyle.xml

* Update checkstyle.xml

* [Improvement][api] Improve the code style and checkstyle of ds

* Update checkstyle.xml

style/checkstyle.xml

@@ -186,19 +186,51 @@
         </module>
 
         <module name="Indentation">
-            <property name="basicOffset" value="2"/>
+            <property name="basicOffset" value="4"/>
             <property name="braceAdjustment" value="0"/>
-            <property name="caseIndent" value="2"/>
+            <property name="caseIndent" value="4"/>
-            <property name="throwsIndent" value="4"/>
+            <property name="throwsIndent" value="2"/>
             <property name="lineWrappingIndentation" value="4"/>
-            <property name="arrayInitIndent" value="2"/>
+            <property name="arrayInitIndent" value="4"/>
         </module>
 
-        <module name="UnusedImports"/>
+        <module name="IllegalImport">
+            <property name="regexp" value="true"/>
+            <property name="illegalPkgs"
+              value="^com\.google\.api\.client\.repackaged,
+                      ^avro\.shaded, ^org\.apache\.hadoop\.hbase\.shaded,
+                      ^org\.apache\.hadoop\.shaded,
+                      ^javax\.ws\.rs\.ext,
+                      ^cc\.concurrent\.mango\.util\.concurrent,
+                      ^org\.apache\.curator-test\.shaded,
+                      ^com\.sun\.istack,
+                      ^org\.apache\.commons\.lang,
+                      ^org\.jetbrains\.annotations,
+                      ^jline\.internal,
+                      ^com\.cronutils\.utils,
+                      ^javax\.ws\.rs\.ext,
+                      ^org\.jboss\.netty\.util\.internal,
+                      ^com\.sun\.javafx,
+                      ^io\.reactivex\.annotations,
+                      ^org\.codehaus\.jackson"/>
+            <property name="illegalClasses"
+              value="^java\.util\.logging\.Logging,
+                      ^sun\.misc\.BASE64Encoder,
+                      ^sun\.misc\.BASE64Decoder,
+                      ^jdk\.internal\.jline\.internal\.Nullable"/>
+        </module>
       
         <module name="RedundantImport"/>
       
-        <module name="MethodParamPad"/>
+        <module name="UnusedImports"/>
+      
+        <module name="ImportOrder">
+            <property name="groups" value="org.apache.dolphinscheduler,org.apache,java,javax,org,com"/>
+            <property name="ordered" value="true"/>
+            <property name="separated" value="true"/>
+            <property name="option" value="top"/>
+            <property name="sortStaticImportsAlphabetically" value="true"/>
+        </module>
 
         <module name="NoWhitespaceBefore">
             <property name="tokens" value="COMMA, SEMI, POST_INC, POST_DEC, DOT, ELLIPSIS, METHOD_REF"/>
@@ -233,11 +265,6 @@
 
         <module name="CommentsIndentation"/>
 
-        <module name="IllegalImport">
-            <property name="illegalPkgs" value="org.apache.commons"/>
-            <property name="illegalClasses" value="java.util.Optional, com.google.common.base.Optional"/>
-        </module>
-
         <module name="EmptyStatement">
             <property name="severity" value="error"/>
         </module>
@@ -249,16 +276,6 @@
             <property name="allowMissingParamTags" value="true"/>
         </module>
 
-        <module name="ImportOrder">
-            <property name="groups" value="org.apache.dolphinscheduler, *, javax, java, scala"/>
-            <property name="separated" value="true"/>
-            <property name="sortStaticImportsAlphabetically" value="true"/>
-            <property name="option" value="bottom"/>
-            <property name="tokens" value="STATIC_IMPORT, IMPORT"/>
-            <message key="import.ordering"
-                     value="Import {0} appears after other imports that it should precede"/>
-        </module>
-
         <module name="AvoidStarImport"/>
 
     </module>

style/intellij-java-code-style.xml

@@ -37,8 +37,24 @@
   </option>
   <option name="IMPORT_LAYOUT_TABLE">
     <value>
+      <package name="org.apache.dolphinscheduler" withSubpackages="true" static="true" />
+      <emptyLine />
+      <package name="org.apache" withSubpackages="true" static="true" />
+      <emptyLine />
+      <package name="java" withSubpackages="true" static="true" />
+      <emptyLine />
+      <package name="javax" withSubpackages="true" static="true" />
+      <emptyLine />
+      <package name="org" withSubpackages="true" static="true" />
+      <emptyLine />
+      <package name="com" withSubpackages="true" static="true" />
+      <emptyLine />
       <package name="" withSubpackages="true" static="true" />
       <emptyLine />
+      <package name="org.apache.dolphinscheduler" withSubpackages="true" static="false" />
+      <emptyLine />
+      <package name="org.apache" withSubpackages="true" static="false" />
+      <emptyLine />
       <package name="java" withSubpackages="true" static="false" />
       <emptyLine />
       <package name="javax" withSubpackages="true" static="false" />