Provide alias for language mode

[kuchaguangjie]

Some language may have multiple common used names, e.g

• Go is actually the name, not Golang. refer: https://go.dev/doc/faq#go_or_golang
• c_cpp might be nice to have alias c, cpp, or even c++.

Ace load js file mode-xxx.js by the mode name xxx, which means the ace user must use the xxx directly, or they need to alias the names by themselves.

So, I'm wondering, when call editor.session.setMode("ace/mode/xxx"), is it possible for ace to recognize the xxx aliaes, so that each programmer don't have to do that.

e.g both editor.session.setMode("ace/mode/golang") and editor.session.setMode("ace/mode/go") would load mode-golang.js.

[kuchaguangjie]

Or, event better, provide a mechanism to let user to add/config the aliases.