AutoComplete icons for func=yes and others

[vinsworldcom]

Fix #11311

When using the new "fx" icon in autocomplete for "autoComplete/*.xml" files, there is a desire to distinguish between actual "functions" - those that have the XML parameter func="yes" set and those that don't.

This PR adds another XPM image taken from the Notepad++ function list (the icon for a function name - a light purple box) and uses that for non-function entries in the "autoComplete/*.xml" files. We add the new XPM, register it with the other one and then in the routine where we add the "\x1E IMG_ID", we just test if the XML node has the func parameter set to yes. If so, use the "fx" icon, if not, use the new box one.

Examples are shown in the referenced issue.

Cheers.

[donho]

As I mentioned in #11311, fx for distinguishing from word entries.
This PR will make more complain for the API files without func attribute at all, then we will run after the problem by adding the icons over and over again.
I prefer to keep the concept as simple as possible. Sorry that I have reject this PR.

[vinsworldcom]

@donho understand about simplicity, my argument for the counterpoint is in the issue. Understood if you ultimately choose to reject this - no worries.

Cheers.