docs(plugin-scripts): add how-to docs

[aj-emerich]

Adds a how-to documentation file covering authentication, tasks, triggers, task runners, and log exporters for this plugin.

🤖 Generated with Claude Code

[github-actions]

📦 Artifacts

Name	Size	Updated	Expiration
	56.63 MB	May 20, 26, 3:14:01 PM UTC	May 27, 26, 3:13:58 PM UTC

🧪 Java Unit Tests

	Tests	Passed ✅	Skipped	Failed	Time ⏱
Java Tests Report	218 ran	218 ✅	0 ⚠️	0 ❌	22m 3s 604ms

🔁 Unreleased Commits

✅ No unreleased commits found.

[github-actions]

Tests report quick summary:

success ✅ > tests: 218, success: 218, skipped: 0, failed: 0

unfold for details

Project	Status	Success	Skipped	Failed
plugin-script-bun	success ✅	3	0	0
plugin-script-deno	success ✅	3	0	0
plugin-script-go	success ✅	19	0	0
plugin-script-groovy	success ✅	8	0	0
plugin-script-jbang	success ✅	2	0	0
plugin-script-julia	success ✅	2	0	0
plugin-script-jython	success ✅	5	0	0
plugin-script-lua	success ✅	3	0	0
plugin-script-nashorn	success ✅	6	0	0
plugin-script-node	success ✅	13	0	0
plugin-script-perl	success ✅	3	0	0
plugin-script-php	success ✅	3	0	0
plugin-script-powershell	success ✅	4	0	0
plugin-script-python	success ✅	61	0	0
plugin-script-r	success ✅	2	0	0
plugin-script-ruby	success ✅	34	0	0
plugin-script-shell	success ✅	47	0	0