[microTVM][Tutorial] Fix micro_aot and micro_autotune tutorials

[mehrdadh]

Added config_main_stack_size to autotune since running graph debugger requires more workspace. Also added to micro_aot because of KWS model.
Also removed west_cmd option in tutorial because of #13377

[tvm-bot]

Thanks for contributing to TVM! Please refer to the contributing guidelines https://tvm.apache.org/docs/contribute/ for useful information and tips. Please request code reviews from Reviewers by @-ing them in a comment.

• cc @alanmacd, @gromero, @leandron _{See #10317 for details}
• Built docs for commit 4941fe2 can be found here.

_{Generated by tvm-bot}

[gromero]

@mehrdadh LGTM.

I'm aware why option west_cmd got removed in this PR, but others -- or even us much time ahead -- might lack the context, so I would love to see a word in the commit message about it too.

Thanks.

[mehrdadh]

@gromero thanks for the review! I added more info in the PR description.