Add option for auto capitalizing recognized statements

[byronpendason]

This is a feature that goes back to the old days of QBasic. If you typed in a recognized statement (such as print, inkey$, if, elseif, etc), it would automatically capitalize it when you hit enter or moved to another line as long as there was no errors on that line. Would it be possible to implement this into QBJS?

[FellippeHeitor]

Indentation should be cool too; I wonder if it's something codemirror provides already

[boxgaming]

Codemirror does support automatic indentation via the “smartIndent” property. I tried it early on and if I remember correctly some work would be required on the qbjs-lang.js file for it to work correctly.