Add waterbump_4tiles.dds to basecontent and use it as the default water.normalTexture

[AntlerForce]

BAR mappers have been using this improved water bump texture many map releases now, here are some example screenshots showing the difference between the proposed texture and the current default:

Old Texture:

New Texture:

Screenshots using the Old Texture:

The old texture often looks like lumps/frothy foam rather than the waves it should represent. Here are some replicated screenshots showing how the new texture looks in place:

Details

• The format of the new texture is DXT1 .dds, created from a .png with nvtt_export.exe and --mip-filter 0 --quality 3
• Changes the default numTiles setting from 1 to 4. The min of 1 and max of 16 remain the same.
• Does not affect maps that already specify a custom normalTexture and numTiles
• This is my first PR to engine, I have already built locally and tested my changes but please inspect to ensure I haven't done anything silly.

[lhog]

Looking better indeed.
Do you have @Beherith permission to use the texture?

[AntlerForce]

Looking better indeed. Do you have @Beherith permission to use the texture?

No, I wanted to request a review of this PR from Beherith for that reason but I'm not seeing how to do that.

[AntlerForce]

Behe says yes to adding it to basecontent https://discord.com/channels/549281623154229250/1323379143215419482/1323828649106870387

[lhog]

Great. Saving here for posterity: