Refactor Makefile.toml and use it as the source of truth for (almost) all CI

[Manishearth]

This refactors Makefile.toml into multiple subfiles. It also adds various ci-job-foo make tasks which are directly run by CI, so adding further CI can be done by tweaking Makefile.toml only.

This reduces the number of parallel CI jobs. We still have separate jobs for things that are fast-fail: there's a separate check, tidy, fmt, and clippy job, but otherwise there's a "test" (for most tests), "features" (for the "all feature combos" test), and "wasm" jobs. Jobs like "bincode" have been rolled into "test": unless the job has a reason to be long running or require weird dependencies, it should be a part of "test".

Fixes #612

[jira-pull-request-webhook]

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• .github/workflows/build-test.yml is different

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[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• .cargo/config.toml is different
• .github/workflows/build-test.yml is different
• tools/scripts/wasm.toml is different

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[Manishearth]

looks better now!

[codecov-commenter]

Codecov Report

Merging #783 (612f643) into main (2a47704) will decrease coverage by 0.11%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #783      +/-   ##
==========================================
- Coverage   76.17%   76.05%   -0.12%     
==========================================
  Files         189      189              
  Lines       12151    12170      +19     
==========================================
  Hits         9256     9256              
- Misses       2895     2914      +19     

Impacted Files	Coverage Δ
experimental/provider_static/src/lib.rs	4.00% <0.00%> (-8.50%)	⬇️
ffi/capi/src/custom_writeable.rs	0.00% <0.00%> (ø)
ffi/capi/src/fixed_decimal.rs	0.00% <0.00%> (ø)
ffi/capi/src/provider.rs	0.00% <ø> (ø)

---

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[coveralls]

Pull Request Test Coverage Report for Build fe550cc9d36fb76896f423396775865f3de03dd1-PR-783

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 76.119%

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Totals
Change from base Build da5bfbfdfa8dc7946530ec3ec97b365e1ab627c7:	0.0%
Covered Lines:	9384
Relevant Lines:	12328

---

💛 - Coveralls

[Manishearth]

I made it cache cargo-make, but I plan to write a github action that makes that easy to do. The existing install GHA supports caching, but badly (it uses an external cache), and using the builtin cache is blocked on actions-rs/install#5

[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• .cargo/config.toml is different
• Makefile.toml is different
• tools/scripts/tidy.toml is different

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~ Your Friendly Jira-GitHub PR Checker Bot

[jira-pull-request-webhook]

Notice: the branch changed across the force-push!

• components/icu/src/lib.rs is no longer changed in the branch

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[Manishearth]

This is ready to land, though before we land this we need to update the required CI runs in the repo settings

[Manishearth]

I tried cleaning up the cargo make installs in #787, but it didn't work. Eventually actions-rs/install will get support for the native cache.

[sffc]

Suggestion (optional): Delete the "tidy-minus-fmt" task, move these up into "ci-job-tidy", and make "tidy" invoke fmt + ci-job-tidy.

[Manishearth]

I kinda want the ci-job-foo to be toplevel so you can change CI jobs without changing other stuff.

[Manishearth]

eh, fixed it anyway

[sffc]

When we're ready to merge this, we should change the branch permissions to reflect the new CI.

[Manishearth]

Seems like I have to change the rules before the push, so we have to wait for these checks to pass and I need another r+