add editorconfig config, fix issues (only whitespace changes) (#1958)

.editorconfig

@@ -0,0 +1,14 @@
+# Top-most EditorConfig file
+root = true
+
+# Unix-style newlines with a newline ending every file, utf-8 charset
+[*]
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+charset = utf-8
+
+[/lnbits/static/vendor/*]
+end_of_line = unset
+insert_final_newline = unset
+trim_trailing_whitespace = unset

Makefile

@@ -30,6 +30,9 @@ checkprettier:
 checkblack:
 	poetry run black --check .
 
+checkeditorconfig:
+	editorconfig-checker
+
 dev:
 	poetry run lnbits --reload