Fix #11629: AirportGetNearestTown for rotated airports (#11631)

Add rotation parameter to AirportGetNearestTown
Add wrapper for existing stations
Remove unnecessary iterator cloning

Fix: AirportGetNearestTown incorrectly assumed first TileIterator result was origin. (#11565)

Not all TileIterators are equal, and some do not start at the top-corner, so the perimeter check was wrong. As the caller already has thie origin tile, use that instead.

Codechange: automatic adding of _t to (u)int types, and WChar to char32_t

for i in `find src -type f|grep -v 3rdparty/fmt|grep -v 3rdparty/catch2|grep -v 3rdparty/opengl|grep -v stdafx.h`; do sed 's/uint16& /uint16 \&/g;s/int8\([ >*),;[]\)/int8_t\1/g;s/int16\([ >*),;[]\)/int16_t\1/g;s/int32\([ >*),;[]\)/int32_t\1/g;s/int64\([ >*),;[]\)/int64_t\1/g;s/ uint32(/ uint32_t(/g;s/_uint8_t/_uint8/;s/Uint8_t/Uint8/;s/ft_int64_t/ft_int64/g;s/uint64$/uint64_t/;s/WChar/char32_t/g;s/char32_t char32_t/char32_t WChar/' -i $i; done

Fix: Support more than 256 stations/waypoints/roadstops per class. (#10793)

It was already possible to define more than 256 per class, but not possible
to use them as the index used in GUI and passed through commands was limited
to a byte.

Fix: CmdRemoveRoadStop didn't validate the height property properly (#9945)

Height was a unsigned 32bit integer, where TileAddWrap uses a
signed 32bit integer for the height. In result, there was an
implicit cast from unsigned to signed, messing things up.

But looking at it from a functional perspective, allowing such
large values is not sensible. In fact, width is restricted to
just a 8bit integer. By changing height to a 8bit integer too,
the implicit cast will never make a positive value negative anymore.

Codechange: Let the compile generate the master command table out of templated command traits.

This is using a non-intrusive type-traits like templated system, which
allows compile-time validation that the command table and the command
enum match up.