[DOCS] Restructure and edit the ILM and SLM documentation #53894
Description
Meta issue for improvements to the ILM/SLM docs.
- Move Snapshot/Restore out of modules. [DOCS] Move snapshot-restore out of modules. #49618
- Align SLM API docs with ILM [DOCS] Align with ILM API docs #48705
- Rework ILM overview & split off to a separate topic [DOCS] Split off ILM overview to a separate topic. #51287
- Edit ILM GS tutorial [DOCS] Edit ILM GS tutorial #51513
- Align ILM docs with standard structure Edit actions for consistency and add action template. #55632
- Edit ILM task content Edit actions for consistency and add action template. #55632
- Align SLM content with standard structure and ILM changes [DOCS] Extract the cron docs from Watcher docs and add to the API conventions. #56313
- Fix [DOCS] ILM & Rollover documentation improvements #49151 ([DOCS] Added info about refresh interval & max_docs and step execution #56315)
- Fix Doc: Add note on ILM setup when using Logstash and Beats #42469 ([DOCS] Added info about automatic config for Beats & Logstash. #56317)
- Fix Documentation for ILM move to step #42080 ([DOCS] Add request body param descriptions for move to step #56560)
- Fix Clarification in docs about max_size for rollover API #37981 ([DOCS] Clarify definition of max_size #56561)