Adds .editorconfig(formatting and code style settings for VS and other editors). Fixes code indentation and other typos.

Author: NeoAnomaly

src/.editorconfig

@@ -0,0 +1,7 @@
+# top-most EditorConfig file
+root = true
+
+# 4 space indentation
+[*.{cpp,h,hpp}]
+indent_style = space
+indent_size = 4