Abstractify basic walls

[ShnitzelX2]

Summary

Infrastructure "abstractify basic walls"

Purpose of change

Colored wall bloat is egregious, as is redefining the same flags over and over

Describe the solution

Set up a simple wall hierarchy by material

Also, defined values for fields in map_common_bash_info and related structs' constructors. copy-from uses the default constructor, and unset fields default to values inconsistent with the default optional values from load() functions, so copying from an abstract terrain didn't work.

I didn't do half-walls here because they have differences that seemed questionable

Describe alternatives you've considered

Testing

• Can burn t_wall but not t_concrete_wall
• Can destroy t_wall with a pickaxe but not t_concrete_wall
• Can mine t_wall and t_concrete_wall with a pickaxe
• t_wall_glass is still transparent
• Can remove paint from t_wall_blue with a paint chipper
• Deconstructed a table
• Deconstructed t_wall
• Blew up the side of a TCLF without errors

Additional context

Let me know if I misplaced anything. I'd like to do this with windows, but they need extra work for copy-from