@deprecated doesn't actually do anything

[adriweb]

Environment

name	version
IDEA version	2020.3.1 (IC-203.6682.168)
Luanalysis version	1.2.1 (also tested on master as of Jan 11th)
OS	Linux Ubuntu 20.10

What are the steps to reproduce this issue?

1. Enable the Lua > Lua deprecation inspection if it isn't already
2. Annotate a class or a function with @deprecated Use foobar instead (or without the words after the tag, it doesn't matter)
3. Use said deprecated symbol anywhere

What happens?

Only the words written after @deprecated end up being shown in the documentation popup of a symbol (but not mentioning Deprecated), and no actual warning or visual representation (like strikethrough) on the usage of the deprecated symbol.

What were you expecting to happen?

The "standard" visual+warnings feedback when trying to use deprecated functions/classes, if this inspection is enabled.

[adriweb]

Looks like someone created the same ticket on emmylua heh