[FEATURE] Implement querying 1 ScanNode and a list of ScanNodes

[mwakaba2]

Requested by several community members.

• https://discord.com/channels/869983523371642921/941088706545209394/1027682816139460648

Proposed Solution

• Query a specific scan node by it's id.
• Get scan node version, maybe status, uptime, and assigned bots count
• Query a list of scan nodes.