Add initial IntelliJ IDEA code style configuration

.gitignore

@@ -1,5 +1,6 @@
 .*
 !.git*
+!.idea
 !.mailmap
 */target
 *~

.idea/.gitignore

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+/*
+!.gitignore
+!codeStyles
+!fileTemplates

.idea/codeStyles/Project.xml

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+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <option name="FORMATTER_TAGS_ENABLED" value="true" />
+    <option name="DO_NOT_FORMAT">
+      <list>
+        <fileSet type="namedScope" name="fernflower" pattern="file[openrs2-fernflower]:*/&amp;&amp;!file[openrs2-fernflower]:pom.xml" />
+      </list>
+    </option>
+    <JavaCodeStyleSettings>
+      <option name="CLASS_NAMES_IN_JAVADOC" value="3" />
+      <option name="CLASS_COUNT_TO_USE_IMPORT_ON_DEMAND" value="9999" />
+      <option name="NAMES_COUNT_TO_USE_IMPORT_ON_DEMAND" value="9999" />
+      <option name="PACKAGES_TO_USE_IMPORT_ON_DEMAND">
+        <value />
+      </option>
+      <option name="IMPORT_LAYOUT_TABLE">
+        <value>
+          <emptyLine />
+          <package name="java" withSubpackages="true" static="false" />
+          <package name="javax" withSubpackages="true" static="false" />
+          <emptyLine />
+          <package name="" withSubpackages="true" static="false" />
+          <package name="" withSubpackages="true" static="true" />
+        </value>
+      </option>
+      <option name="JD_ALIGN_PARAM_COMMENTS" value="false" />
+      <option name="JD_ALIGN_EXCEPTION_COMMENTS" value="false" />
+      <option name="JD_ADD_BLANK_AFTER_DESCRIPTION" value="false" />
+      <option name="JD_INDENT_ON_CONTINUATION" value="true" />
+    </JavaCodeStyleSettings>
+    <codeStyleSettings language="JAVA">
+      <option name="KEEP_FIRST_COLUMN_COMMENT" value="false" />
+      <option name="KEEP_CONTROL_STATEMENT_IN_ONE_LINE" value="false" />
+      <option name="KEEP_BLANK_LINES_IN_DECLARATIONS" value="1" />
+      <option name="KEEP_BLANK_LINES_IN_CODE" value="1" />
+      <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_METHOD_IN_INTERFACE" value="0" />
+      <option name="INDENT_CASE_FROM_SWITCH" value="false" />
+      <option name="ALIGN_MULTILINE_RESOURCES" value="false" />
+      <option name="ALIGN_MULTILINE_FOR" value="false" />
+      <option name="SPACE_WITHIN_ARRAY_INITIALIZER_BRACES" value="true" />
+      <option name="SPACE_BEFORE_ARRAY_INITIALIZER_LBRACE" value="true" />
+      <option name="RESOURCE_LIST_WRAP" value="1" />
+      <option name="RESOURCE_LIST_LPAREN_ON_NEXT_LINE" value="true" />
+      <option name="RESOURCE_LIST_RPAREN_ON_NEXT_LINE" value="true" />
+      <option name="WRAP_COMMENTS" value="true" />
+      <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" />
+      <indentOptions>
+        <option name="CONTINUATION_INDENT_SIZE" value="4" />
+        <option name="USE_TAB_CHARACTER" value="true" />
+        <option name="SMART_TABS" value="true" />
+      </indentOptions>
+    </codeStyleSettings>
+  </code_scheme>
+</component>

.idea/codeStyles/codeStyleConfig.xml

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+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>

.idea/fileTemplates/internal/Class.java

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+#if (${PACKAGE_NAME} && ${PACKAGE_NAME} != "")package ${PACKAGE_NAME};#end
+#parse("File Header.java")
+public final class ${NAME} {
+}