add basic support for the optimi adamw optimizer (#1727)

* add support for optimi_adamw optimizer w kahan summation

* pydantic validator for optimi_adamw

* workaround for setting optimizer for fsdp

* make sure to install optimizer packages

* make sure to have parity for model parameters passed to optimizer

* add smoke test for optimi_adamw optimizer

* don't use foreach optimi by default

docker/Dockerfile

@@ -22,9 +22,9 @@ WORKDIR /workspace/axolotl
 # If AXOLOTL_EXTRAS is set, append it in brackets
 RUN pip install causal_conv1d
 RUN if [ "$AXOLOTL_EXTRAS" != "" ] ; then \
-        pip install -e .[deepspeed,flash-attn,mamba-ssm,galore,$AXOLOTL_EXTRAS] $AXOLOTL_ARGS; \
+        pip install -e .[deepspeed,flash-attn,mamba-ssm,optimizers,$AXOLOTL_EXTRAS] $AXOLOTL_ARGS; \
     else \
-        pip install -e .[deepspeed,flash-attn,mamba-ssm,galore] $AXOLOTL_ARGS; \
+        pip install -e .[deepspeed,flash-attn,mamba-ssm,optimizers] $AXOLOTL_ARGS; \
     fi
 
 # So we can test the Docker image