feature: add editorconfig file

.editorconfig

@@ -0,0 +1,22 @@
+# documentation https://editorconfig.org/
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+insert_final_newline = true
+max_line_length = 130
+indent_style = space
+trim_trailing_whitespace = true
+tab_width = 2
+indent_size = 2
+
+[{*.java,*.js}]
+indent_size = 4
+ij_continuation_indent_size = 4
+
+[{*.xml,*.html}]
+indent_size = 4
+
+[Makefile]
+indent_style = tab

.gitignore

@@ -3,6 +3,7 @@
 # Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
 
 .idea/
+*.iml
 
 # CMake
 cmake-build-*/