[Mate] Add a per-skill status table to skills:install output

[wachterjohannes]

Q	A
Bug fix?	no
New feature?	yes
Docs?	no
Issues	n/a
License	MIT

Problem

skills:install typically touches several skills in one run, but its output was a couple of terse, comma-joined sentences with nothing per-skill. skills:list already renders a rich per-skill table; this brings skills:install up to the same level.

Before

6 skills installed: mate-php-environment-check, mate-symfony-log-investigation, mate-symfony-profiler-debugging, mate-symfony-request-triage, mate-symfony-service-inspection, mate-system-information

After

Summary sentences are kept, and a per-skill table is rendered underneath using skills:list's columns plus a new Action column (installed/rebuilt/skipped/unchanged, or the --dry-run equivalents):

+----------------------------+-----------------------+--------------+---------+---------+---------+--------+-----------+
| Installed Name             | Original              | Package      | Enabled | Mode    | State   | Status | Action    |
+----------------------------+-----------------------+--------------+---------+---------+---------+--------+-----------+
| mate-php-environment-check | php-environment-check | vendor/pkg-a | yes     | managed | managed | ok     | installed |
+----------------------------+-----------------------+--------------+---------+---------+---------+--------+-----------+

Removed skills stay reported via the existing "Removed N skill(s)" sentence (no current status to show). --format=json/--format=toon added, matching skills:list.

Tests

vendor/bin/phpunit, phpstan analyse --debug, php-cs-fixer fix: all green (one pre-existing, unrelated environment failure noted in the PR history). New tests cover install/update/skip, the table, dry-run wording, and --format=json.