Fix whitespace, add .editorconfig, add GitHub workflow (#883)

examples/main/README.md

@@ -1,3 +1,3 @@
-# main
-
-TODO
+# main
+
+TODO

examples/main/main.cpp

@@ -168,7 +168,7 @@ int main(int argc, char ** argv) {
     }
 
     // enable interactive mode if reverse prompt or interactive start is specified
-    if (params.antiprompt.size() != 0 || params.interactive_start) { 
+    if (params.antiprompt.size() != 0 || params.interactive_start) {
         params.interactive = true;
     }