Break sensu module out into library

[cholcombe973]

This addresses #18 and breaks the sensu module out into its own library. I also fixed some clippy lints along the way. I didn't run rustfmt over the code because it would change too many lines and make it hard to see what I changed.

[cholcombe973]

@jbaublitz any thoughts on this?

[jbaublitz]

@cholcombe973 Hi! I no longer have push access for this repository so I'm unable to merge this, but I took a look at the changes and it seems reasonable at first glance based on the issue you opened. I want to review further before signing off on this, but I'm cc'ing @patcable so he can also provide feedback. He still can get this merged if we decide it ultimately makes sense.

[patcable]

Hey @cholcombe973! Thanks for taking a look at this. (And, thanks friend-of-the-stack @jbaublitz for pinging me)

One of the reasons we put the code up here but didn't do much with publishing on Crates is because we don't have a lot of rust stuff right now. If you're cool with the refactor living here, I'm cool with merging this in - I'm also happy if folks fork and then publish to crates too.

[cholcombe973]

@patcable yeah I'm fine with it living here.

[jbaublitz]

@patcable After looking into this a little more, I'd like to do one more thing before we merge this and make a new crate. Sensu has released a new API.

@cholcombe973 Any objections if I add your commits to a larger PR supporting both legacy and new Sensu APIs? Then I'm happy to release this as a standalone.

[cholcombe973]

@jbaublitz no objections :). Feel free