Codechange: Use vector and iterators to store old/new vehicles during autoreplace. (#11851)

This avoids malloc/free of 3 arrays along index counting, and the data for each part is kept together.

Codechange: Redefine some cargo-related values in terms of CargoID instead of CargoType.

Values used as special filter types are now defined as offsets from NUM_CARGO instead of confusingly reusing CARGO_NO_REFIT/CARGO_AUTO_REFIT types.

Codechange: Split CT_INVALID into CT_INVALID and INVALID_CARGO.

INVALID_CARGO is a CargoID and should be used for most purposes in game.
CT_INVALID is a CargoType used for defining default properties.

Fix: Trivial autoreplace of mixed cargo articulated engines (#11253)

Do not fail autoreplace/autorenew of mixed cargo articulated engines
due to an inability to refit to mixed cargoes, when no refit is
required because the target engine already has a suitable set of cargoes.
Notably, this allows autorenew (autoreplace to same engine type)
to succeed.

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: Use IsValidCargoID/IsValidCargoType.

IsValidCargoType() is used only for unmapped IDs.

Fix 3c047b1: AIGroup.GetProfitLastYear could get values different than those displayed in GUI (#10227)

* Change: Store "all time" and "since minimum age" last year profits on groups

* Fix: Update last year profit for groups when copying vehicle statistics on autoreplace

* Codechange: Refactor profit last year

* Change: Rename some group related items for clarity

* Change: Reorder the fields in GroupStatistics

That way less memory gets wasted.

Fix #10032: Capacities of articulated vehicles in build window

See also: #9954

Fix: CmdSetAutoReplace didn't validate group type and engine type match (#9950)

Basically, you could setup an auto-replace in a group for trains
to replace a ship with another ship.

Most of the code is surprisingly okay with this, it is only the
group statistics that doesn't like this.

Fix: autoreplace command did not validate the vehicle argument properly (#9946)

It first checked if the vehicle was in the depot, which for some types
is only a valid action for the primary vehicle. Afterwards, it checked
if the vehicle was a primary vehicle.

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.

Codechange: use "[[maybe_unused]]" instead of a wide variety of other ways we had

While at it, replace OTTD_ASSERT with WITH_ASSERT, as this
is always set if assert() is valid. No matter if NDEBUG is set
or not.

Fix #9256, 12e43c697d2: invalid read after free. (#9258)

This also changes ScriptEventVehicleAutoReplaced when replacing wagons:
The event is now only spawned, if the head engine changes, so only if the VehicleID of the consist changes.
Previously replacing wagons spawned an event with OldVehicleID==NewVehicleID.

(svn r21924) -Codechange: Unify some parts of the articulated vehicle code.
-Cleanup: Avoid conversions to Train and RoadVehicle that are no longer required.