Move LocalAssetStorage and LocalAssetProvider classes to TundraCore

[Stinkfist0]

Tundra is unusable without these classes. No need to have them in a runtime-loaded plug-in. After moving the files around, AssetModule could be renamed to HttpAssetProvider.

[jonnenauha]

+1 and at the same time local:// should be made a strict relative path instaed of "a file name that gets recursively searched from all known local storages".

We had a discussion about this with @cadaver and he seemed to agree. This would be a good place to do that change.

[jonnenauha]

So src/Core/TundraCore/Asset would probably be the logical place? I recon there is no need to make TundraCore/LocalAssetProvider

[Stinkfist0]

Yupyup.