feat: allow specifying asdf plugins with full urls

[jdx]

Fixes #3063

This allows installing asdf plugins directly like mise install asdf:https://github.com/jdx/mise-tiny or mise install asdf:jdx/mise-tiny

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.05%	✅ 85.00%

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (2566f84)	21464	16925	78.85%
Head commit (f729ebb)	21463 (-1)	16914 (-11)	78.81% (-0.05%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#3067)	40	34	85.00%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[github-actions]

Hyperfine Performance

mise x -- echo

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-main x -- echo	14.9 ± 0.3	14.2	17.3	1.01 ± 0.06
mise-2024.11.18 x -- echo	14.7 ± 0.8	14.0	26.9	1.00
mise x -- echo	14.9 ± 0.3	14.2	16.7	1.01 ± 0.06

mise env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-main env	11.7 ± 0.3	11.2	13.2	1.01 ± 0.03
mise-2024.11.18 env	11.5 ± 0.2	11.0	12.7	1.00
mise env	11.7 ± 0.3	11.1	13.8	1.01 ± 0.03

mise hook-env

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-main hook-env	11.6 ± 0.2	11.1	12.4	1.02 ± 0.03
mise-2024.11.18 hook-env	11.4 ± 0.2	10.9	13.0	1.00
mise hook-env	11.6 ± 0.2	11.1	13.4	1.02 ± 0.03

mise ls

Command	Mean [ms]	Min [ms]	Max [ms]	Relative
mise-main ls	11.9 ± 0.2	11.5	12.9	1.02 ± 0.03
mise-2024.11.18 ls	11.7 ± 0.2	11.3	13.2	1.00
mise ls	11.9 ± 0.2	11.4	12.9	1.01 ± 0.03