* Remove dependency on StringIds.h from Localisation.h
* Include Language.h in UTF8.cpp for function declarations
* Rename tests/Localisation.cpp to tests/LocalisationTest.cpp
FixedVector class requires use of algorithm include, one of C++'s
heaviest, while in practice it is used only in handful of places.
See #21947 for methodology
372-266=106 #include <algorithm>s fewer
* Part of #21421: refactor TUNNEL_MAX_COUNT
* Part of #21421: deleted unused OBJECT_SELECTION_NOT_...
* Part of #21421: refactor MAX_SERVER_DESCRIPTION_LENGTH
* Part of #21421: refactor EXPENDITURE_TABLE_MONTH_COUNT
* Part of #21421: refactor FINANCE_GRAPH_SIZE
* Part of #21421: refactor NETWORK_STREAM_VERSION and _ID
* Part of #21421: MONEY_STRING_MAXLENGTH
* Part of #21421: deleted MAX_USER_STRINGS
* Part of #21421: refactor USER_STRING_MAX_LENGTH
* Part of #21421: deleted USER_STRING_END
* Part of #21421: refactor REAL_NAME_START
* Part of #21421: refactor REAL_NAME_END
* Part of #21421: deleted FONT(X) and FONT_OPENRCT2_SPRITE
* Part of #21421: refactor CURRENCY_SYMBOL_MAX_SIZE
* Part of #21421: refactor CURRENCY_RATE_MAX_NUM_DIGITS
* Part of #21421: refactor SCROLLABLE_ROW_HEIGHT
* Part of #21421: refactor ADD_CLAMP_BODY
* Part of #21421: applied clang-format to Util.cpp
* Part of #21421: incorporate feedback from #21760
* Part of #21421: revert to nbsp in Currency.cpp
* Part of #21421: fix merge conflict
* Part of #21421: fix more merge conflict
* Part of #21421: apply clang format
* Part of #21421: using std::numerics for finding bounds
* Part of #21421: fix reference to kAddClampBody
* Part of #21421: improved on comments about AddClamp func
* Part of #21421: apply correct network stream version number
* Part of #21421: apply clang-format
Fixes#21825 by making 'DrawingLocks' which lock only if multi threaded drawing is enabled. Refactors TTF.cpp to use this.
Also cleans up some header files, modernises constants, and removes code to avoid using shared_mutex on MacOS builds. This was originally added because older versions of MacOS didn't support this in the STL.