Re-write in xshell

[nyonson]

Re-write the ci/run_task.sh script in xshell, attempting to match as much functionality as possible, but some user interfaces are changed for easier maintenance. The largest change is dropping the config scripts, contrib/crates.sh, contrib/whitelist_deps.sh, and contrib/test_vars.sh, for contrib/rbmt.toml.

The first patch makes the repo a workspace and initializes the new crate for the xshell based maintainer tools. The following patches add commands to match existing functionality. They also add a new lock command for lock file management as well as a --package filter (matching cargo's interface) to run commands on a subset of a workspace's crates.

Closes #25, #6

[nyonson]

In draft mode for now, going to try and copy over all the existing tasks. Don't think it will be too difficult with the scaffolding done. Are we cool with the crate name and the binary name? Maybe I should add "rust-" to the front, but seemed weird publishing that to crates.

EDIT: convinced my self to just call it rust-bitcoin-maintenance-tools, rbmt for the exe.

[tcharding]

This PR is sexy.

Unrelated, but for your amusement, while reviewing I was like "WTF is the releases crate" only to find

[package]
name = "releases"
version = "0.1.0"
authors = ["Tobin C. Harding <[email protected]>"]
license = "CC0-1.0"
repository = "https://github.com/rust-bitcoin/rust-bitcoin-maintainer-tools/"
description = "Tool for checking various release related things."

Guess I have not been running that ...

[tcharding]

This was a pleasure to review. I spent most my time going, "yeah that looks right" as opposed to reviewing shell were I spend most my time going, "fuck, what exactly does that do, I think that's right but it might not be". Rust for the win.

[nyonson]

Nice, I have 2 more patches for the test tasks and lockfiles, just ironing them out. I'll fold in these suggestions and push those up and should be close to good to go.

[nyonson]

Added 5533a45 for a package filter feature. I think this is good to go, running it locally with rust-bitcoin. Still not quite sure yet the best way to integrate it (via cargo install or a dev-dep).