[Preview]Adding new filetypes for developer file preview (#17183)

* push

* push

* push

* Adressed comments and adjusted a thing

* Added xslt

* push

* push. Ready to review

* Spellcheck adjustments

* Add installer stuff

* Changed reg and removed xsl

Co-authored-by: htcfreek <61519853+htcfreek@users.noreply.github.com>

* Fixed tab

* Updated monaco_languages.json

Co-authored-by: Stefan Markovic <stefan@janeasystems.com>
Co-authored-by: htcfreek <61519853+htcfreek@users.noreply.github.com>

.github/actions/spell-check/excludes.txt

@@ -1,8 +1,10 @@
 # See https://github.com/check-spelling/check-spelling/wiki/Configuration-Examples:-excludes
 (?:^|/)monacoSRC/
+(?:^|/)MonacoPreviewHandler/customLanguages/
 (?:^|/)MonacoPreviewHandler/monaco_languages.json
 (?:^|/)MonacoPreviewHandler/index.html
 (?:^|/)MonacoPreviewHandler/generateLanguagesJson.html
+(?:^|/)MonacoPreviewHandler/monacoSpecialLanguages.js
 (?:^|/)(?i)COPYRIGHT
 (?:^|/)(?i)LICEN[CS]E
 (?:^|/)package(?:-lock)\.json$

.github/actions/spell-check/expect.txt

@@ -2213,6 +2213,7 @@ wdp
 wdupenv
 weakme
 webcam
+webserver
 webpage
 website
 webview