chore: Add a newline formatting configuration and a comment for warni…

…ng (#2464)

- Add a newline formatting configuration
- Add a comment for the IDEA unsupported warning about `continuation_indent_size`

.editorconfig

@@ -22,9 +22,10 @@ charset = utf-8
 end_of_line = lf
 insert_final_newline = true
 
-[*.{java,xml,py}]
+[*.{java, xml, py}]
 indent_style = space
 indent_size = 4
 
-[*.{java,xml}]
+[*.{java, xml}]
+# Ignore the IDEA unsupported warning & it works well (indeed)
 continuation_indent_size = 8

hugegraph-style.xml

@@ -81,6 +81,7 @@
     <option name="KEEP_BLANK_LINES_BETWEEN_PACKAGE_DECLARATION_AND_HEADER" value="1" />
     <option name="KEEP_BLANK_LINES_BEFORE_RBRACE" value="1" />
     <option name="BLANK_LINES_AROUND_CLASS" value="1" />
+    <option name="BLANK_LINES_AFTER_CLASS_HEADER" value="1" />
     <indentOptions>
       <option name="SMART_TABS" value="true" />
     </indentOptions>