Feature Request: Improve DimHeatmap documentation and add PC number title for ggplot2 output

[dkcoxie]

Motivation

Related to Issue #5988 - the current version of DimHeatmap produces either a "fast" base output with the PC labels included as plot titles OR a ggplot output where the figure legends are visible but there is no label of what PC is being plotted

Feature Description

A pull request will be added shortly with a modification to the DimHeatmap visualization to clarify that fast=FALSE also will show the figure legend with scales for the heatmap, plus a modification to the ggplot outputs so that PC number is included in the plot panels (combined or not) by default.

Alternatives

No response