[FEATURE REQUEST] Add a LND chain/graph sync status

[VajraOfIndra]

In light of the recent LND bug, it'd be useful to have an indicator of the sync status (both chain and graph) of LND/CLN.

For LND:

$ lncli getinfo | grep synced_to_chain,

"synced_to_chain": true,
$ lncli getinfo | grep synced_to_graph,
"synced_to_graph": true,

Maybe one line in the LND column:

Lightning (LND) up
v0.15.2
Synced? chain | graph
Indra

..with chain & graph in green if synced or in red if not synced..
just one example, could be anything else.