Update formatting configurations

EditorConfig applies to all files, LF is enforced instead of CRLF,
Prettier configuration moved to JSON, properties are inherited from
EditorConfig.

.editorconfig

@@ -1,7 +1,7 @@
 root = true
 
-[{src, translations}/*]
-end_of_line = crlf
+[*]
+end_of_line = lf
 insert_final_newline = true
 indent_style = space
 indent_size = 4

.prettierrc

@@ -0,0 +1,9 @@
+{
+    "arrowParens": "avoid",
+    "bracketSpacing": true,
+    "printWidth": 110,
+    "quoteProps": "consistent",
+    "semi": true,
+    "singleQuote": false,
+    "trailingComma": "es5"
+}

.prettierrc.yaml

@@ -1,11 +0,0 @@
-# .prettierrc or .prettierrc.yaml
-trailingComma: "es5"
-tabWidth: 4
-semi: true
-singleQuote: false
-printWidth: 110
-useTabs: false
-quoteProps: "consistent"
-bracketSpacing: true
-arrowParens: avoid
-endOfLine: auto