Add Gold and Coal Rock Anomalies

[Firewars763]

About the PR

Adds two new rock anomaly types, one that generates gold ore and another that generates coal ore. Both of these anomalies have respective ore crab variants as well as new crystal colors and light tubes.

Why / Balance

I found it strange that we had rock anomalies for silver ore but not gold, so I decided to add it myself. On another point, added the coal anomaly because of the following issue: #33890

This could potentially allow Science to get access to gold easier, however it will still require the use of an Ore Processor.

Technical details

I simply cloned the existing Silver Rock anomaly and swapped out the ore and creature spawns for new ones. The art is just recolored versions of the Silver and Iron Ore Crab.
I did the same thing with the crystals and lights.

Media

Requirements

• I have read and am following the Pull Request and Changelog Guidelines.
• I have added media to this PR or it does not require an ingame showcase.

Breaking changes

Changelog

🆑

• add: Added gold and coal rock anomalies and ore crab enemies.
• add: Added yellow and black crystals, crystal shards, and light tubes.

[github-actions]

RSI Diff Bot; head commit 86d13d1 merging into 6beb8e4
This PR makes changes to 1 or more RSIs. Here is a summary of all changes:

Resources/Textures/Effects/mobspawn.rsi

State	Old	New	Status
crab_coal			Added
crab_gold			Added

Resources/Textures/Mobs/Elemental/orecrab.rsi

State	Old	New	Status
coal_crab			Added
gold_crab			Added

Edit: diff updated after 86d13d1

[Firewars763]

Also this is my first ever PR on here so let me know if I screwed anything up.

[SoulFN]

Black light tubes is real

[Anno-Midi]

Only issue with this I see is that it makes getting a rock anom significantly more likely then the others

[slarticodefast]

Only issue with this I see is that it makes getting a rock anom significantly more likely then the other

The RandomRockAnomalySpawner should already handle that so that all rock anomalies have the same cumulative weight as the other types.

[beck-thompson]

Looks good! The only weird thing is the odd light values for black light tubes and crystals but it seems to work fine. Its kind of weird and I like it!