Add EditorConfig settings

.editorconfig

@@ -0,0 +1,17 @@
+# see http://editorconfig.org/
+
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.java]
+indent_style = space
+indent_size = 2
+
+[*.json]
+indent_style = space
+indent_size = 2

.vscode/extensions.json

@@ -3,6 +3,7 @@
         "vscjava.vscode-java-pack",
         "shengchen.vscode-checkstyle",
         "GabrielBB.vscode-lombok",
-        "naco-siren.gradle-language"
+        "naco-siren.gradle-language",
+        "EditorConfig.editorconfig"
     ]
 }

.vscode/settings.json

@@ -3,21 +3,10 @@
   "checkstyle.version": "8.8",
   "checkstyle.configurationFile": "./config/checkstyle/checkstyle.xml",
   "editor.renderWhitespace": "all",
-  "files.insertFinalNewline": true,
-  "files.trimFinalNewlines": true,
-  "files.trimTrailingWhitespace": true,
   "[java]": {
-    "editor.detectIndentation": false,
-    "editor.insertSpaces": true,
     "editor.rulers": [
       100
     ],
-    "editor.tabSize": 2,
-  },
-  "[json]": {
-    "editor.detectIndentation": false,
-    "editor.insertSpaces": true,
-    "editor.tabSize": 2,
   },
   "java.configuration.updateBuildConfiguration": "automatic"
 }