fix(mbake): correct mbake command and use stdin

[Saul-CD]

I noticed that the existing bake formatter was not working correctly after installing it with mason.nvim, and after some investigation, I found two main issues and fixed them in a new file mbake.lua.

I chose to create a new mbake.lua file and set its command = "mbake" instead of modifying the existing bake.lua because thats the name it has in pypi, mason, and its the current default (and i think only) name of the executable: EbodShojaei/bake@f4b1c9f EbodShojaei/bake@e60dec1
Having a formatter named mbake will be more intuitive i think.

Also, the previous approach (stdin = false and passing $FILENAME as an argument) caused the formatter to fail: mbake would correctly format the temporary file created by conform.nvim, but since it formats the file in-place, it doesn't return any output to stdout, which was interpreted as a failure and the (correctly formatted) temporary file was deleted, leaving the original buffer untouched.
This fix uses the --stdin flag, which was specifically added to mbake for editor integrations like this one. EbodShojaei/bake@0cd0cbd

Finally, I'd like to mention that this is my first pull request to an open-source project. I'm incredibly excited to contribute, but I'm also aware that I might not have followed all the project's conventions perfectly.
I am completely open to any feedback, suggestions, or requested changes. Please let me know if there's anything I can do to improve this PR or future contributions!

[stevearc]

Thanks for the PR! I just merged #796 which makes the same change from bake -> mbake, but I'm happy to take a change to use stdin/stdout as well. I'd prefer to keep this in the same formatter rather than creating two. Could you merge your changes into the existing bake formatter?

[stevearc]

LGTM thanks!

[Saul-CD]

Thanks so much for the feedback and for taking the time to review my PR.

I'm happy to make that change. I updated my branch
Thanks again for the guidance!