Docs: refactors config panels and visualizations, corrects relrefs (#55940)

* refactors config panels and visualizations, corrects relrefs

* adds an alias

* Remove some old content

* moves visualizations topic to the root

* moves out panels and visualization topics to the root

* adds move and resize panel to add/organize panel; creates a create dashboard topic under build dashboards; adjusts context of add a panel to be from within an existing dashboard

* updates aliases

* creates search at root, moves dashboard preview to search, creates standalone search dashboard topic

* moves Set dashboard time range to use-dashboards, creates modify dashboard settings and adds moves Modify dashboard time settings to that topic

* moves existing query-options topic from working with panels to configure-panel-visualizations, moves panel time overrides and timeshift content to query options

* Moving things to better category, fixing links, improving ordering

* Move panel inspector to main panel topic

* completes partial fix of relrefs

* relref fixes con't

* restructures remaining panels topics

* more relref fixes

* Minor fix

* Minor tweak

* finishes fixing relrefs

Co-authored-by: Torkel Ödegaard <torkel@grafana.com>
Co-authored-by: Jack Baldry <jack.baldry@grafana.com>

docs/sources/shared/visualizations/legend-mode.md

@@ -21,4 +21,4 @@ Choose where to display the legend.
 
 ### Legend values
 
-Choose which of the [standard calculations]({{< relref "../../panels/calculation-types/" >}}) to show in the legend. You can have more than one.
+Choose which of the [standard calculations]({{< relref "../../panels-visualizations/calculation-types/" >}}) to show in the legend. You can have more than one.