Codechange: Use consistent name for bay road stops

As of #10494, this is how we describe original dead-end road stops.

Codechange: Use std::copy/fill pattern to initialize rail and road specs. (#11285)

This avoids use of lengthof and array indices.

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

Codechange: pass "ground vehicle" to GetTileSlopeZ since for tunnel/bridges there are two states

Previously it checked the position in non-driving direction to "guess" whether
a ground vehicle was using the function, so on tunnels/bridges it could either
return the Z of the (virtual) ground compared to the Z of the path the vehicle
would take.

Change: Avoid crashing to the side of a train

When a road vehicle is already running on a multi level crossing, and a train shows up ahead, don't make the road vehicle crash on the side of the train.

Codechange: Template DoCommand to automagically reflect the parameters of the command proc.

When finished, this will allow each command handler to take individually
different parameters, obliviating the need for bit-packing.

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.

Fix #8647: draw tram catenary using 4 bounding boxes.
The back sprite is now supposed to contain west, north and east pillars.
The front sprite is supposed to contain the south pillar and the wires.

Fix #8068: always allow removal of tram track if that generates money (#8509)

Even if you are completely broke, generating money should always
be allowed.

Fix #8297: Infrastructure counters for road tunnels, bridges, depots … (#8454)

The previous fix 887e9481ff0e70df6bf93ce15a3899a03f124c50 only worked for roads and failed to consider a multiplier used for the infrastructure totals for tunnels/bridges.
Also, depots and bus/truck stops are counted as 2 road pieces on creation but were only counted as 1 road piece on conversion because the function DiagDirToRoadBits() was used, which only ever returns single-piece road segments.

Co-authored-by: A. S <admin-git@sotai.tk>

Change #8162: Conversion of Town Road, Impr. Error

This changes the error when you attempt to convert a road owned by a town to another road, specifying that it's owned by the town rather than simply being incompatible. As the original poster of the issue pointed out, these seemed to be the only occurences of the incompatible road string, so now it's unused, but they would be left untouched in case of future use or since changing it to a different error would do the work of removing it then. If requested, it likely wouldn't be too difficult to remove the string entirely.