style: Add .editorconfig file (#42)

* style: Add `.editorconfig` file

Describes some basic formatting like indentation with spaces,
indentation size, final newlines, etc

* docs: Add explanation for EditorConfig

Author: GeckoEidechse

.editorconfig

@@ -0,0 +1,11 @@
+# For more info on `.editorconfig` file see https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*.{rs,ts,vue,css}]
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+indent_style = space
+indent_size = 4

README.md

@@ -96,6 +96,10 @@ else {
 
 Release builds are generally done via CI. To build locally, make sure typescript is compiled (`./node_modules/.bin/rollup --config`), then run `npm run tauri build`.
 
+### Other
+
+This repo uses [EditorConfig](https://editorconfig.org/) to define some basic formatting rules. Find a plugin for your IDE [here](https://editorconfig.org/#download).
+
 ## Why yet another Northstar intaller/updater/mod-manager instead of contributing to an existing one?
 
 The 3 main GUI tools for handling such tasks with Norhtstar are