lasso plugin for NetV.js
netv: NetV: pass core NetV object
configs: {}: key-value pair configs
enable: bool: default enable lasso or not
multiSelectKey: string: key pressed when using multi-select, default is 'Shift'
pathStyle: {}: lasso path style (below is supported attribute and their default value)
fill: rgba(200, 200, 200, 0.2),
stroke: black,
stroke-width: 2,
stroke-dasharray: [],
stroke-linejoin: round,
stroke-linecap: round