port https://github.com/threefoldtech/vgrid to 3bot

[despiegk]

https://github.com/threefoldtech/vgrid

REQUIREMENTS

• find nodes based on all kinds of parameters
• query ZOS for stats
• examples work
• make mdbook as tutorial

[sameh-farouk]

Update:

• [x] find nodes based on all kinds of parameters (vGrid filters updated based on latest params available on gridproxy )
• [x] query ZOS for stats (Added get_node_stats_by_id to query gridproxy /nodes/{ID}/statistics/ endpoint and add relevant models)
• [x] examples work (All examples fixed now)
• [X] make mdbook as tutorial

PR: #180 PR: #186 PR: #191

[sameh-farouk]

Update: PRs Waiting for review