Added 17 seamless brick textures

17 seamless tileable brick textures have been added, up to 4096x4096 resolution.

old-brick_0038_0 texture
old-brick_0039_0 texture
old-brick_0040_0 texture
old-brick_0041_0 texture
old-brick_0042_0 texture
old-brick_0043_0 texture
old-brick_0047_0 texture
old-brick_0048_0 texture
painted-brick_0044_0 texture
painted-brick_0045_0 texture
painted-brick_0046_0 texture
painted-brick_0046_0 texture
painted-brick_0047_0 texture
rough-brick_0042_0 texture
smooth-brick_0048_0 texture
smooth-brick_0049_0 texture
smooth-brick_0050_0 texture