docs: update contributing

.github/CONTRIBUTING.md

@@ -93,25 +93,12 @@ from [API Guardian](https://github.com/apiguardian-team/apiguardian).
 
 We use [Checkstyle](https://checkstyle.sourceforge.io/) in our build workflow to validate coding style.
 
-It is recommended to import the [config/checkstyle/checkstyle.xml](../config/checkstyle/checkstyle.xml) file into your
+It is recommended to import the [config/checkstyle/checkstyle.xml](../config/checkstyle/checkstyle.xml) or [config/intellij-code-style.xml](config/intellij-code-style.xml) file into your
 IDE, so that formatting rules are respected.
 
 Moreover, the [CheckStyle-IDEA plugin](https://plugins.jetbrains.com/plugin/1065-checkstyle-idea) can be used to check
 if there are no style violations.
 
-### Import order
-
-IntellIJ does not import the `import` order rules correctly. Apply following order manually:
-
-- import `com.refinedmods.*`
-- blank line
-- import `java.*`
-- import `javax.*`
-- blank line
-- import all other imports
-- blank line
-- import static all other imports
-
 ## Architecture
 
 ## Testing

config/intellij-code-style.xml

@@ -0,0 +1,64 @@
+<code_scheme name="Refined Mods" version="173">
+  <JavaCodeStyleSettings>
+    <option name="SPACE_INSIDE_ONE_LINE_ENUM_BRACES" value="true" />
+    <option name="CLASS_COUNT_TO_USE_IMPORT_ON_DEMAND" value="999" />
+    <option name="NAMES_COUNT_TO_USE_IMPORT_ON_DEMAND" value="999" />
+    <option name="PACKAGES_TO_USE_IMPORT_ON_DEMAND">
+      <value />
+    </option>
+    <option name="IMPORT_LAYOUT_TABLE">
+      <value>
+        <package name="com.refinedmods" withSubpackages="true" static="false" />
+        <emptyLine />
+        <package name="java" withSubpackages="true" static="false" />
+        <package name="javax" withSubpackages="true" static="false" />
+        <emptyLine />
+        <package name="" withSubpackages="true" static="false" />
+        <emptyLine />
+        <package name="" withSubpackages="true" static="true" />
+      </value>
+    </option>
+  </JavaCodeStyleSettings>
+  <ScalaCodeStyleSettings>
+    <option name="MULTILINE_STRING_CLOSING_QUOTES_ON_NEW_LINE" value="true" />
+  </ScalaCodeStyleSettings>
+  <codeStyleSettings language="Cookie">
+    <indentOptions>
+      <option name="USE_TAB_CHARACTER" value="false" />
+    </indentOptions>
+  </codeStyleSettings>
+  <codeStyleSettings language="JAVA">
+    <option name="RIGHT_MARGIN" value="120" />
+    <option name="BLANK_LINES_BEFORE_PACKAGE" value="1" />
+    <option name="SPACE_BEFORE_ARRAY_INITIALIZER_LBRACE" value="true" />
+    <option name="CALL_PARAMETERS_WRAP" value="1" />
+    <option name="METHOD_PARAMETERS_WRAP" value="1" />
+    <option name="RESOURCE_LIST_WRAP" value="1" />
+    <option name="EXTENDS_LIST_WRAP" value="1" />
+    <option name="THROWS_LIST_WRAP" value="1" />
+    <option name="EXTENDS_KEYWORD_WRAP" value="1" />
+    <option name="THROWS_KEYWORD_WRAP" value="1" />
+    <option name="METHOD_CALL_CHAIN_WRAP" value="1" />
+    <option name="BINARY_OPERATION_WRAP" value="1" />
+    <option name="TERNARY_OPERATION_WRAP" value="1" />
+    <option name="FOR_STATEMENT_WRAP" value="1" />
+    <option name="ARRAY_INITIALIZER_WRAP" value="1" />
+    <option name="ASSIGNMENT_WRAP" value="1" />
+    <option name="ASSERT_STATEMENT_WRAP" value="1" />
+    <option name="IF_BRACE_FORCE" value="3" />
+    <option name="DOWHILE_BRACE_FORCE" value="3" />
+    <option name="WHILE_BRACE_FORCE" value="3" />
+    <option name="FOR_BRACE_FORCE" value="3" />
+    <option name="PARAMETER_ANNOTATION_WRAP" value="1" />
+    <option name="VARIABLE_ANNOTATION_WRAP" value="1" />
+    <option name="ENUM_CONSTANTS_WRAP" value="1" />
+    <indentOptions>
+      <option name="CONTINUATION_INDENT_SIZE" value="4" />
+    </indentOptions>
+  </codeStyleSettings>
+  <codeStyleSettings language="NBTT">
+    <indentOptions>
+      <option name="USE_TAB_CHARACTER" value="false" />
+    </indentOptions>
+  </codeStyleSettings>
+</code_scheme>