--set

[joshuajerin]

Closes Linear-2724

We are adding --set subcommand inside apply to temporarily set user's specifying setting to that value.

To test it out locally, you can run "tembo apply --set (instance name).(instance setting) = (instance value).
There is a folder inside Tembo-cli/examples/set for a example tembo.toml file

When tested locally, it changes the stack_type from "Standard" to "OLTP" in Docker as seen below.

When tested in cloud, we give the command to change CPU from "1" to "2" as seen below with a Screenshot from mahout.

[shahadarsh]

@joshuajerin Great progress. A few points:

• Can you add a test similar to the one you added for merge?
• In the PR description, can you explain the steps you took to test it locally and against the cloud? If you can specify the outputs there that would be great.
• Because of my merge earlier today you will have to fix the merge conflicts (sorry). You will see I moved the tests from main.rs to apply.rs because it's testing a function in apply.rs

[shahadarsh]

Great work. Looks good to me. If you can also bump the version in Cargo.toml to 0.16.0