[gpt-oss] Add gpt-oss bf16 support

vllm/plugins/lora_resolvers/README.md

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+# LoRA Resolver Plugins
+
+This directory contains vLLM general plugins for dynamically discovering and loading LoRA adapters
+via the LoRAResolver plugin framework.
+
+Note that `VLLM_ALLOW_RUNTIME_LORA_UPDATING` must be set to true to allow LoRA resolver plugins
+to work, and `VLLM_PLUGINS` must be set to include the desired resolver plugins.
+
+# lora_filesystem_resolver
+This LoRA Resolver is installed with vLLM by default.
+To use, set `VLLM_PLUGIN_LORA_CACHE_DIR` to a local directory. When vLLM receives a request
+for a LoRA adapter `foobar` it doesn't currently recognize, it will look in that local directory
+for a subdirectory `foobar` containing a LoRA adapter. If such an adapter exists, it will
+load that adapter, and then service the request as normal. That adapter will then be available
+for future requests as normal.