* Replace direct `fmt.Println()` usage in a test with `t.Log()`
* Rename `cmd` to `cli`
* Move asdf command from module root
* Fix some linter warnings, thus enabling some tests that were being skipped
* Fix `Makefile`
* Rename module to `github.com/asdf-vm/asdf`
* Fix `TestGetAllToolsAndVersionsInContent/returns_empty_list_with_found_true_and_no_error_when_empty_content`
* Rewrite `Unique()` to be a bit more straightforwards
* Get workflow checks passing again
toolversions.Unique is ever so slightly faster, technically.
```
goos: linux
goarch: amd64
pkg: github.com/asdf-vm/asdf/internal/toolversions
cpu: AMD Ryzen 9 3900X 12-Core Processor
│ /tmp/old.txt │ /tmp/new.txt │
│ sec/op │ sec/op vs base │
Unique-24 346.5n ± 1% 342.4n ± 1% -1.17% (p=0.027 n=10)
│ /tmp/old.txt │ /tmp/new.txt │
│ B/op │ B/op vs base │
Unique-24 160.0 ± 0% 160.0 ± 0% ~ (p=1.000 n=10) ¹
¹ all samples are equal
│ /tmp/old.txt │ /tmp/new.txt │
│ allocs/op │ allocs/op vs base │
Unique-24 3.000 ± 0% 3.000 ± 0% ~ (p=1.000 n=10) ¹
¹ all samples are equal
```
* Create `toolversions.ParseSlice` function
* Create `toolversions.Format` function
* Refactor `shims` package to use `toolversions.Version` struct
* Fix handling of path versions in `shims.FindExecutable` function
* Get more shim_exec.bats tests passing by adding shebang lines to test scripts
* Disable shim_exec test case for scenario that is no longer possible
* Add documentation on another breaking change
* Create toolversions.Version struct and update code to use new struct
* Enable asdf uninstall BATS tests
* Create `toolversions.ParseFromCliArg` function
* Create `versions.Uninstall` function
* Update `ParseFromCliArg` function to handle latest version without optional filter value
* Create `asdf uninstall` command
* Comment out invalid test
* Address linter warnings
* Move `versions.ParseString` function to the toolversions package
* Create `toolversions.FormatForFS` function
* use new `toolversions.FormatForFS` function
* Create `asdf where` command
* Enable BATS tests for `asdf where` command
* Add `x/sys` as a dependency
* Create `toolversions.Unique` function
* Create `shims` package with `ExecutablePaths`, `PluginExecutables`, `Write`, `GenerateForVersion` function
* Address linter warnings
