Automated build and packaging

for Linux, macOS, and Windows

.editorconfig

@@ -0,0 +1,18 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+
+[{.gitignore,*.desktop}]
+indent_size = 0
+
+[*.{json,yml,yaml}]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false