Feature: drop ICU-lx in favour of directly interfacing with harfbuzz

This means we have RTL support again with ICU 58+. It makes use of:
- ICU for bidi-itemization
- ICU for script-itemization
- OpenTTD for style-itemization
- harfbuzz for shaping

Update: Translations from eints
english (au): 4 changes by krysclarke
vietnamese: 4 changes by KhoiCanDev
korean: 4 changes by telk5093
russian: 1 change by Ln-Wolf

Fix: Linkgraph legend assumes strings are small.

Ensure all linkgraph legend strings are drawn with FS_SMALL forced, so
that it does not rely on NewGRF authors.

Change: Rename text colour NWidgetPart to SetTextStyle and add font size.

This allows to set both text colour and size for any widget with default
drawing.

Update: Translations from eints
english (us): 4 changes by 2TallTyler

Fix: Set TC_NO_SHADE only for shaded engine in purchase list.

Additionally use TC_FORCE to prevent additional colours in the shaded text.

Update: Translations from eints
italian: 4 changes by Rivarossi
russian: 4 changes by Ln-Wolf
finnish: 4 changes by hpiirai
turkish: 4 changes by densxd
dutch: 6 changes by Afoklala
portuguese: 4 changes by azulcosta

Change: [CI] Use a custom name for matrix runs (#10723)

By default, GitHub adds all arguments of the matrix between ().
This is fine sometimes, but in other times it becomes a very
lengthy line.

With this commit, we decide what is between those (), making it
a lot more readable.

Change: base autosaves intervals on real time (instead of game time) (#10655)

There are two fundamental issues with autosave:
- When fast-forwarding, it saves way too often
- When paused, it never saves

Both makes no sense. Autosaves are meant to prevent you from
accidentally losing your work. The emphasis on "your" work.

To solve both issues, the autosave now works on real time. You
can select every 10 / 30 / 60 / 120 minutes, which are similar to
what the setting was in game-months.

When you pause, autosaving will stop. Unless you make any change
to the game; then it will continue to make autosaves, even so
the game is paused. Unpausing / pausing resets this mechanism.

Fix #10627: Houses subsitute specs should only be copied on first definition.

Before #10627, substitue specs were always copied despite redefinition.

Update: Translations from eints
vietnamese: 1 change by KhoiCanDev
polish: 7 changes by pAter-exe

Change: Draw and size video driver info like base set info.

This allows very long video driver information strings to wrap instead
of making the game options window very wide.

Change: Size Game Options description widgets after initial sizing.

Trying to update text widgets with free flowing multiline text during
UpdateWidgetSize(), as the final width is not yet known and so the
calculated height being incorrect, usually resulting in one or more
empty text lines.

The solution is to update the widget heights afterwards during
OnResize(), at which point the final widths are known. The window is
then resized if needed.

(Note this technique needs more attention if width can also change.)

Add: Helper to update widget vertical size.

This avoids directly setting min_y outside widget code.

Update: Translations from eints
finnish: 2 changes by hpiirai
portuguese: 1 change by azulcosta

Codechange: Rename DECLARE_ENUM_AS_BIT_SET parameter to enum_type.

It works on enums not masks.

Codechange: Rename control_point_t to ControlPoint.

The _t suffix is reserved by POSIX 1003.1.

Update: Translations from eints
english (au): 1 change by krysclarke
english (us): 1 change by 2TallTyler
galician: 36 changes by pvillaverde
korean: 14 changes by telk5093
italian: 1 change by Rivarossi
russian: 1 change by Ln-Wolf
turkish: 2 changes by densxd

Cleanup: Remove obsolete (Make)EnumPropsT. (#10697)

This was used by the command system to help extract p1/p2 parameters, which no longer happens.

Codechange: Use reserve/emplace when initializing object definitions.

This avoids unnecessary initialization of objects.

Fix: Violation of strict weak ordering in TownRatingSorter

If two unrated town names compare equal in TownNameSorter

Update: Translations from eints
english (au): 1 change by krysclarke
english (us): 1 change by 2TallTyler
vietnamese: 4 changes by KhoiCanDev
italian: 1 change by Rivarossi
russian: 1 change by Ln-Wolf
turkish: 1 change by EndChapter
portuguese: 1 change by azulcosta

Update: Translations from eints
english (us): 5 changes by 2TallTyler
vietnamese: 1 change by KhoiCanDev
russian: 1 change by Ln-Wolf
turkish: 33 changes by densxd
dutch: 5 changes by Afoklala

Fix: fmt's {:#04X} yields '0X00', not '0x0000'

Technically the 0X vs 0x is not a big problem, just not pretty. However, the
length also including the 0x results in unexpected behaviour, so it probably
better to not use it.

Codechange: Make GRF temporary engine data a vector. (#10685)

This replaces manual C-style realloc/memset/free.

Update: Translations from eints
italian: 20 changes by Rivarossi
french: 5 changes by ZarTek-Creole