Add xdit diffusion docs (#5576)

* Add xdit video diffusion base page.

* Update supported accelerators.

* Remove dependency on mad-tags.

* Update docker pull section.

* Update container launch instructions.

* Improve launch instruction options and layout.

* Add benchmark result outputs.

* Fix wrong HunyuanVideo path

* Finalize instructions.

* Consistent title.

* Make page and side-bar titles the same.

* Updated wordlist. Removed note container reg HF.

* Remove fp8_gemms in command and add release notes.

* Update accelerators naming.

* Add note regarding OOB performance.

* Fix admonition box.

* Overall fixes.

.wordlist.txt

@@ -220,6 +220,7 @@ href
 Hyperparameters
 HybridEngine
 Huggingface
+Hunyuan
 IB
 ICD
 ICT
@@ -531,6 +532,7 @@ UAC
 UC
 UCC
 UCX
+ud
 UE
 UIF
 UMC
@@ -842,6 +844,7 @@ pallas
 parallelization
 parallelizing
 param
+params
 parameterization
 passthrough
 pe
@@ -888,6 +891,7 @@ querySelectorAll
 queueing
 qwen
 radeon
+rc
 rccl
 rdc
 rdma
@@ -1052,6 +1056,8 @@ writebacks
 wrreq
 wzo
 xargs
+xdit
+xDiT
 xGMI
 xPacked
 xz