Sluice box 3cp cp_sluice_box_b8a

fixed some texture issues

updated B, I couldnt change much do to not being able to review demo this time : (

overhauled a and b point

added flank to a

missed some props on B

reworked B point, updated red spawn, and adj some lighting.

naming issues on discord

added displacments and signage

modified mid, removed door for red to A, and made C easier for blu to cap.

messed up a door, fixed now