Use Tinker's event instead of overriding existing materials

Describe the bug Game crash on load when stats are already defined in Tinker's Construct, advising to use events insteads.

To Reproduce Start the game

Expected behavior Games boot

Versions:

Metallurgy 4: Reforged: 0.2.0
Forge: 14.23.5.2838
Minecraft: 1.12.2
Conflicting mod: Tinker's Construct API
Other mods you think could cause issues:
- Mantle 1.12-1.3.3.55
- Tinker's Construct 1.12.2-2.12.0.135
- Construct Armory 1.12.2-1.2.3.4
- MMDLib 1.12-1.0.0-rc2.36
- BaseMetals 1.12-2.5.0-rc2.332
- OreSpawn 1.12-3.3.1.172

Crash Report https://gist.github.com/LemADEC/7e371f8d66bae637c925b197304380f9

net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Metallurgy 4: Reforged (metallurgy)
Caused by: slimeknights.tconstruct.library.TinkerAPIException: [TCon API] Could not add Stats to "adamantine": Stats of type "core" were already registered by MMDLib. Use the events to modify stats.
    at slimeknights.tconstruct.library.TinkerRegistry.error(TinkerRegistry.java:951)
    at slimeknights.tconstruct.library.TinkerRegistry.addMaterialStats(TinkerRegistry.java:232)
    at slimeknights.tconstruct.library.TinkerRegistry.addMaterialStats(TinkerRegistry.java:208)
    at it.hurts.metallurgy_reforged.integration.mods.IntegrationCArmory.preInit(IntegrationCArmory.java:36)
    at it.hurts.metallurgy_reforged.Metallurgy.preInit(Metallurgy.java:91)

Davoleo / Metallurgy-4-Reforged

Use Tinker's event instead of overriding existing materials #158