[FEATURE] Linters and code analysis for TYPO3 projects

Default configuration and installation

.editorconfig

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+# EditorConfig is awesome: http://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+# CSS-Files
+[*.css]
+indent_style = tab
+indent_size = 4
+
+# HTML-Files
+[*.html]
+indent_style = tab
+indent_size = 2
+
+# TMPL-Files
+[*.tmpl]
+indent_style = tab
+indent_size = 4
+
+# SCSS-Files
+[*.scss]
+indent_style = space
+indent_size = 4
+
+# TS/JS-Files
+[*.ts]
+indent_style = space
+indent_size = 2
+[*.js]
+indent_style = space
+indent_size = 2
+
+# JSON-Files
+[*.json]
+indent_style = tab
+indent_size = 4
+
+# PHP-Files
+[*.php]
+indent_style = space
+indent_size = 4
+
+# ReST-Files
+[*.rst]
+indent_style = space
+indent_size = 3
+
+# MD-Files
+[*.md]
+indent_style = space
+indent_size = 4
+
+# YAML-Files
+[{*.yaml,*.yml}]
+indent_style = space
+indent_size = 2
+
+# package.json
+# .travis.yml
+# bower.json
+[{package.json,.travis.yml,bower.json}]
+indent_style = space
+indent_size = 2
+
+# TypoScript
+[*.typoscript]
+indent_style = space
+indent_size = 2
+[*.tsconfig]
+indent_style = space
+indent_size = 2
+
+# XLF-Files
+[*.xlf]
+indent_style = tab
+indent_size = 4
+
+# SQL-Files
+[*.sql]
+indent_style = tab
+indent_size = 2
+
+# .htaccess
+[{_.htaccess,.htaccess}]
+indent_style = tab
+indent_size = 4