[Vanilla Enhancement] Crush level system

[NetsuNegi]

• It's possible to customize crush level and crushable level for now. Rolling is only allowed when the CrushLevel of the compactor is greater than the CrushableLevel of the crushed object.
• 现在可以指定碾压与被碾压等级了。当且仅当碾压者的碾压等级大于目标的被碾压等级时才可以进行碾压。

In rulesmd.ini

[General]
CrusherLevel=5                            ; integer
CrushableLevel=5                          ; integer
OmniCrusherLevel=10                       ; integer
OmniCrushResistantLevel=10                ; integer
BuildingCrushableLevel=                   ; integer

[WallModel]
WallCrushableLevel=10                     ; integer

[SOMEUNIT]                                ; Crusher
CrushLevel=                               ; integer
CrushLevel.Veteran=                       ; integer
CrushLevel.Elite=                         ; integer

[SOMETECHNO]                              ; infantry, unit, aircraft
CrushableLevel=                           ; integer
CrushableLevel.Veteran=                   ; integer
CrushableLevel.Elite=                     ; integer

[SOMEINFANTRY]
DeployedCrushableLevel=                   ; integer
DeployedCrushableLevel.Veteran=           ; integer
DeployedCrushableLevel.Elite=             ; integer

[github-actions]

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[Coronia]

it would be better to use Promotable for those variables that got changed by veterancy

[TaranDahl]

Tested by @Flactine

[TaranDahl]

It would be best if AE could be allowed to adjust the level.
However, the current code is extensible enough, so this is just an optional item.