Implement caching on LTX and WAN video models

[vladmandic]

CacheConfig is used to enable FasterCache and PyramidAttentionBroadcast
CacheConfig is present in Hunyuan, Mochi, Latte, Allegro, Cog transformer modules
but its not present in WAN or LTX transformer modules:

• WanTransformer3DModel
• LTXVideoTransformer3DModel

ask is to enable caching functionality for WAN and LTX models.

cc @a-r-r-o-w

[github-actions]

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[a-r-r-o-w]

Worked on in #11180

[a-r-r-o-w]

@vladmandic First Block Cache should be supported with both LTX and Wan. More methods will followup as I find time. Marking this closed but feel free to open any specific model/algorithms FRs