feat: add ability to access metrics to the Endpoint
#225
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New
metrics
andmetrics_map
methods on theEndpoint
.metrics
returns anEndpointMetrics
, that containsmagicsock
,net_report
, andportmapper
fields, each of which can be accessed to look at individual metrics.metrics_map
returns aHashMap
ofString
keys tou64
(orBigInt
, for js) values. The key strings are in the format "GROUP:METRIC_NAME", with the GROUP being one of "magicsock", "net_report", and "portmapper".