Enable HaRe

[fendor]

HaRe has been removed to make it easier to merge #1126 and to switch to hie-bios.
We want it back, though! The blocking issue was how to obtain a global ModuleGraph which is currently impossible to reliably to maintain.
Needs discussion on how to fix this.

[jneira]

Little reminder: we will have to remove the note in the readme about HaRe being disabled: https://github.com/haskell/haskell-ide-engine/blob/master/README.md#features

[yugawara]

Hi, I am new to this, just tried Haskell IDE Engine via devcontainer in VSCode on Windows 10.
I noticed that there was no renaming feature and saw the comment about HaRe being disabled.
Does this mean it is impossible to use the renaming feature at this time?

[jneira]

I am afraid that it is the case. Probably the reactivation of the plugin will be done in the new project: haskell-language-server