Add documentation for new core apps

[khanspers]

• [x] Largest subnetwork
• [x] Source/target node columns are visible in edge table -> not sure this needs to be described
• [x] Enrichment Table: screenshots
• [x] App Store: screenshots
• [x] enhancedGraphics: Add a couple of examples for Circos charts and labels , and linkout to the full documentation. Too repetitive to include all examples in manual.
• [x] CyCl: moved from core app to core for 3.10, see https://manual.cytoscape.org/en/stable/Cytoscape_and_OpenCL_GPU.html?highlight=CyCl#opencl-gpu-troubleshooting and

[khanspers]

Largest subnetwork added here: https://github.com/cytoscape/cytoscape-manual/blob/3.10/docs/Finding_and_Filtering_Nodes_and_Edges.md#the-select-menu

[khanspers]

Enhanced Graphics added here: https://github.com/cytoscape/cytoscape-manual/blob/3.10/docs/Styles.md#enhanced-graphics Didn't add circoschart yet, will ask Scooter for feedback first.

[khanspers]

CyCL updated here: https://github.com/cytoscape/cytoscape-manual/blob/master/docs/Cytoscape_and_OpenCL_GPU.md (removed trouble-shooting item about installing core app, updated text). Question: Do we need to describe when and how to install OpenCL prefuse layout app? Or is that also part of core now?

[khanspers]

Map Source and Target nodes added here: https://github.com/cytoscape/cytoscape-manual/blob/3.10/docs/Column_Data_Functions_and_Equations.md#map-source-and-target-nodes This assumes that default autoMap property will be TRUE and that the default column used will be shared_name. Need to confirm.

[khanspers]

New/updated sections by Yihang here: https://github.com/cytoscape/cytoscape-manual/blob/3.10/docs/App_Store.md https://github.com/cytoscape/cytoscape-manual/blob/3.10/docs/Enrichment_Table.md