feat: add 'THEN' to same indentation as 'IF' and 'ELSE' if it is in new line

VHDLFormatter.js

@@ -745,7 +745,7 @@ function beautify3(block, result, settings, indent) {
     let regexBlockIndentedEndsKeyWords = indentedEndsKeyWords.convertToRegexBlockWords();
     let regexblockEndsWithSemicolon = blockEndsWithSemicolon.convertToRegexBlockWords();
     let regexMidKeyWhen = "WHEN".convertToRegexBlockWords();
-    let regexMidKeyElse = "ELSE|ELSIF".convertToRegexBlockWords();
+    let regexMidKeyElse = "THEN|ELSE|ELSIF".convertToRegexBlockWords();
     for (; block.cursor <= block.end; block.cursor++) {
         if (indent < 0) {
             indent = 0;
@@ -964,4 +964,4 @@ function RemoveExtraNewLines(input) {
     input = input.replace(/\r\n\r\n\r\n/g, '\r\n');
     return input;
 }
-//# sourceMappingURL=VHDLFormatter.js.map
+//# sourceMappingURL=VHDLFormatter.js.map