Docs: Plugin Installation - reorganize and add air-gapped environments (#96437)
* rewriting installation docs and including info about airgapped environments
* Changing example to lokieexplore app
* run prettier
* adding corrections
* running prettier
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Co-authored-by: Irene Rodriguez <irene.rodriguez@grafana.com>
(cherry picked from commit 0f4517df98)
Co-authored-by: Timur Olzhabayev <timur.olzhabayev@grafana.com>