Add code style config for C files

.editorconfig

@@ -5,8 +5,6 @@ charset = utf-8
 insert_final_newline = true
 trim_trailing_whitespace = true
 max_line_length = 120
-
-[*.java]
 indent_style = tab
 
 [*.xml]

.idea/codeStyles/Project.xml

@@ -1,9 +1,16 @@
 <component name="ProjectCodeStyleConfiguration">
   <code_scheme name="Project" version="173">
+    <option name="OTHER_INDENT_OPTIONS">
+      <value>
+        <option name="USE_TAB_CHARACTER" value="true" />
+        <option name="SMART_TABS" value="true" />
+      </value>
+    </option>
     <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" />
+        <fileSet type="namedScope" name="jni" pattern="file[openrs2-gl-dri-natives]:src/main/c/jaggl_X11_dri.h||file[openrs2-gl-natives]:src/main/c/jaggl_context.h||file[openrs2-gl-natives]:src/main/c/jaggl_opengl.h||file[openrs2-misc-natives]:src/main/c/jagex3_jagmisc_jagmisc.h" />
       </list>
     </option>
     <JavaCodeStyleSettings>