Start creating intermediaries for non-obfuscated classes/methods/fields

[liach]

We have seen situations where mojang suddenly deobfuscates existing fields/methods, breaking our mod usage. This has defeated the intermediary names' purpose, i.e. to allow mods to work across versions more easily. Also, see #9; mojang has changed obfuscation status of classes as well, making such intermediary inclusion more necessary.

[modmuss50]

Yes, I think this needs to be done. We might need a way to re-populate the obf names when yarn builds if it doesn’t have a replacement name for them.

[asiekierka]

The problem is that Mojang and other developers may introduce libraries and software which expect these de-obfuscated names to exist. We need to handle that as well.

[Player3324]

I don't think there's any realistic use case where keeping the original deobf names is beneficial, everything but calling main will most certainly need to access obfuscated parts as well..

[liach]

Now it becomes a bigger problem as seen in 20w10a where many realms classes have been moved away from deobfuscation.