[O] Allow modifying mamba root prefix

scripts/includes/conda.sh

@@ -1,6 +1,6 @@
 # Mamba (conda replacement)
 alias mamba-install="zsh <(curl -L micro.mamba.pm/install.sh)"
-export MAMBA_ROOT_PREFIX="$HOME/.conda"
+export MAMBA_ROOT_PREFIX="${MAMBA_ROOT_PREFIX:-$HOME/.conda}"
 
 # Mamba initialize function
 mamba-init()
@@ -34,4 +34,4 @@ if command -v 'pyenv' &> /dev/null; then
 fi
 
 # This alias needs to be added after mamba-init
-alias mamba="micromamba"
+alias mamba="micromamba"