Pretty print

[pokrakam]

Pretty print everything in keyword upper / identifier lower in one dedicated commit in order to avoid large diff problem
Closes #780 if agreement to use this as a project standard.

Even if a different standard will be used in future, at least everything is in one format now.

[larshp]

@AndreaBorgia-Abo what would you like to do? if you review this one, it can be merged, but will probably cause conflicts in all open PRs

[AndreaBorgia-Abo]

@larshp I guess it can't be helped and I'm fine with a little extra work as long as this is once and for all.
Perhaps we should first write the preferred settings in the coding guidelines (hello @sandraros ) and commit that PR, so that when we pull this one in we are able to reference the guidelines in all conflicting PRs and ask contributors for a little extra editing. All onboard with this?

[larshp]

and much of the pretty-printing can be enforced by the linter

[pokrakam]

Agree with @AndreaBorgia-Abo
On a couple of random checks several open PRs already have conflicts.

[sandraros]

Agreed with all @AndreaBorgia-Abo @pokrakam @larshp : to add it to the coding guidelines first ; then update the linter settings ; and ask people to resolve PR conflicts or do it ourselves (like mines or #669 that I am currently reviewing)

[AndreaBorgia-Abo]

Very well, I'll have a look this evening

[AndreaBorgia-Abo]

Other than some funny new elements in demos/zdemo_excel_wda01.wdyn.xml it looks just as described: differences are either formatting-related or keyword lowercase to uppercase conversion and viceversa for identifiers.
Pulled the tree in my 7.52SP04 demo, all objects active, good.