Processed core, tools and default modules to utilize assets
Converted all console types that were string based, such as TypeImageFilename to utilize const char*/the string table, which avoids a lot of type swapping shenanigans and avoids string corruption
Removed unneeded MainEditor mockup module
Removed some unused/duplicate image assets from the tools
Fixes select mode for the Asset Browser to properly filter to the selecting type
Fixes the imageType in the asset import window inspector to properly set to the importing image asset's discovered type if valid
Fixes AssetBrowser asset selection return so it returns back a valid assetId
Fixes TerrainMaterial save crash by ensuring we fill in the diffuseMapAsset
Removes saving of TerrainMaterial being saved to a generic script file if one isn't found for an existing TerrainMaterialAssets
