Let's use the disable date, if provided, and use 1 year after the
deprecation date otherwise, to display a better message for the
various outputs of deprecated package messages.
Also, provide an internal API for this that can be used by
Homebrew/actions.
This improves the load time of most brew commands. For an example of
one of the simplest commands this speeds up:
Without Bootsnap:
```
$ hyperfine 'git checkout master; brew help' 'git checkout optimise_requires; brew help'
Benchmark 1: git checkout master; brew help
Time (mean ± σ): 525.0 ms ± 35.8 ms [User: 229.9 ms, System: 113.1 ms]
Range (min … max): 465.3 ms … 576.6 ms 10 runs
Benchmark 2: git checkout optimise_requires; brew help
Time (mean ± σ): 383.3 ms ± 25.1 ms [User: 133.0 ms, System: 72.1 ms]
Range (min … max): 353.0 ms … 443.6 ms 10 runs
Summary
git checkout optimise_requires; brew help ran
1.37 ± 0.13 times faster than git checkout master; brew help
```
With Bootsnap:
```
$ hyperfine 'git checkout master; brew help' 'git checkout optimise_requires; brew help'
Benchmark 1: git checkout master; brew help
Time (mean ± σ): 386.0 ms ± 30.9 ms [User: 130.2 ms, System: 93.8 ms]
Range (min … max): 359.5 ms … 469.3 ms 10 runs
Benchmark 2: git checkout optimise_requires; brew help
Time (mean ± σ): 330.2 ms ± 32.4 ms [User: 93.4 ms, System: 73.0 ms]
Range (min … max): 302.9 ms … 413.9 ms 10 runs
Summary
git checkout optimise_requires; brew help ran
1.17 ± 0.15 times faster than git checkout master; brew help
```
- I was on a plane and this failed with:
```
expected block to not output to stderr, but output
"curl: (6) Could not resolve host: spdx.github.io\nWarning: Failed to fetch SBOM schema, cannot perform SBOM validation!
Warning: Could not fetch JSON schema to validate SBOM!\nWarning: SBOM is not valid, not writing to disk!"
```
This is a follow-up to 484498e. I added loading for tap migration
renames from the API but it apparently only worked for full names.
There was a bug in both the code and the tests which prevented
loading by short names. This fixes those bugs so everything should
be good now.
