feat: add support for GladiusEx frames

[ManuelHaag]

No description provided.

[vendethiel]

Neat. Thanks.

[vendethiel]

@jordonwow can you please revert this? While I'm sure it's useful to some people, I'm tired of getting bug reports for that:
https://legacy.curseforge.com/wow/addons/gladiusex/issues/339
https://legacy.curseforge.com/wow/addons/gladiusex/issues/323
https://legacy.curseforge.com/wow/addons/gladiusex/issues/312
https://legacy.curseforge.com/wow/addons/gladiusex/issues/283
https://legacy.curseforge.com/wow/addons/gladiusex/issues/276
https://legacy.curseforge.com/wow/addons/gladiusex/issues/233
https://legacy.curseforge.com/wow/addons/gladiusex/issues/203
https://legacy.curseforge.com/wow/addons/gladiusex/issues/181
https://legacy.curseforge.com/wow/addons/gladiusex/issues/174

There are plenty more, and others in my DMs, so I'd prefer if this was reverted. Thanks.

[jordonwow]

No problem, sorry about that.

[vendethiel]

Thank you for your quick response!

[parsimonious]

I think I may be one of those people who this was useful to. I opened #812 , I'm not 100% sure as my issue covers more than just GladiusEx, but I suspect this is also something I was using. Is it possible to reintroduce this, but perhaps make it opt-in? I understand vendethiel wants to avoid getting spammed with that issue, but I can't actually find a work-around within another addon at the moment.