Create live templates for common code snippets

[obiwan87]

• print -> fmt.print
• println -> fmt.println
• main -> main :: proc() ...
• to be continued

[Dima-369]

I'd say, just start with those 3. But to even be able to define any, one needs an Odin language option here, otherwise I couldn't even start defining any manually in the UI.

[obiwan87]

Added the template group for odin and a very basic "main" template

[obiwan87]

Note to myself:

• how to make additional changes to the code when using a template e.g.:

print should also auto-import "core:fmt" if the package has not been imported. If yes, it has to take into consideration the import alias