feat(transformers): add support for CPU and MPS

Signed-off-by: Ettore Di Giacinto <mudler@localai.io>

backend/python/transformers/requirements-cpu.txt

@@ -1,3 +1,4 @@
+--extra-index-url https://download.pytorch.org/whl/cpu
 torch==2.7.1
 llvmlite==0.43.0
 numba==0.60.0

backend/python/transformers/requirements-mps.txt

@@ -0,0 +1,9 @@
+torch==2.7.1
+accelerate
+llvmlite==0.43.0
+numba==0.60.0
+transformers
+bitsandbytes
+outetts
+sentence-transformers==5.1.0
+protobuf==6.32.0