Separate hlac bullets from blaster's, and make them green

Separate hlac bullets from blaster's, and make them green

All effect-stuff was copy pasted, red and green RGB components of colors were switched.
Added a fallback to use the blaster bullet effects if the hlac ones aren't available to the client.
There's many reasons to make hlac's bullets green, including:
- The wpcolor of hlac is already green, despite its bullets being red,
- ... meaning the crosshair with `crosshair_color_special 1` is already green,
- The _simple simpleitems color for hlac is already green,
- Bullets shot by a hlac aren't easily differentiable to those shot by a blaster if both are red,
- Hlac and blaster are different guns so should shoot different bullets, I know some servers make hlac bullets do different damage to blaster bullets,
- Etc.
This change will also allow for someone to make the hlac_impact effects smaller in size in future, since they can easily obstruct the victim's view due to how spammy the gun is.