D23415: Improve comprehensibility and consistency of window placement mode names

ngraham added a comment.


  Plasma 5.17 has now branched, so we can now move forward with @romangg's plan and target this for Plasma 5.18.
  
  @davidedmundson, can I get the final word on whether or not we should rename the enums in this patch? Yea/nay?

REPOSITORY
  R108 KWin

REVISION DETAIL
  https://phabricator.kde.org/D23415

To: ngraham, #kwin, #vdg, ndavis, filipf, zzag
Cc: gladhorn, alexeymin, IlyaBizyaev, broulik, hein, hpereiradacosta, GB_2, alexde, davidedmundson, romangg, cfeck, filipf, zzag, ndavis, kwin, kde-doc-english, LeGast00n, The-Feren-OS-Dev, sbergeron, jraleigh, gennad, fbampaloukas, mkulinski, ragreen, jackyalcine, iodelay, crozbo, bwowk, ZrenBot, ngraham, skadinna, himcesjf, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas, apol, mart