Add "block monster" flags to water edges in maps with large lakes of water

[Beed28]

In most levels that have large lakes of water, the bots very often end up dogpiling in the underwater area while very rarely being seen on dry land. It's especially bad in MMBDW1 where there's often a mosh pit of bots fighting right over the Remote Mine while you'd be lucky to see them wandering elsewhere.

Levels that have such lakes include MM8AQU, MMBPIR, MMBDW1, MMWTMWS, MM9SPL, and probably some others I'm missing.

I suggest adding the "block monster" flag to most of the water edges so that bots can fight on land, but not every water edge. MM3GEM and MMBCOL are good example of this.

[CutmanMike]

I have added them to MM9SPL and MMBDW1 but not the others. I only really want to do this for maps where literally increases the difficulty of the map due to it, but from what I've seen from the various lets plays the others aren't so bad.