insight: add application name to context

[dirkdev98]

This allows you to put all log streams to a single destination and then aggregate per application.

[github-actions]

==== Benchmark result ====

Node.js version: 14

Total benchmarks: 9
          Passed: 9
          Failed: 0
-----------
object validator simple      2000000  iterations     504  ns/op
object validator nested        50000  iterations   48183  ns/op
logger - strings              500000  iterations    2413  ns/op
logger - objects              500000  iterations    2706  ns/op
logger - deep objects         500000  iterations    4861  ns/op
uuid                         2000000  iterations     528  ns/op
uuid.isValid                10000000  iterations     166  ns/op
isNil                      500000000  iterations       0  ns/op
isPlainObject              100000000  iterations      18  ns/op

[github-actions]

==== Benchmark result ====

Node.js version: 15

Total benchmarks: 9
          Passed: 9
          Failed: 0
-----------
object validator simple      2000000  iterations     535  ns/op
object validator nested        50000  iterations   47546  ns/op
logger - strings              500000  iterations    2205  ns/op
logger - objects              500000  iterations    2725  ns/op
logger - deep objects         500000  iterations    4991  ns/op
uuid                         2000000  iterations     617  ns/op
uuid.isValid                10000000  iterations     166  ns/op
isNil                      500000000  iterations       0  ns/op
isPlainObject              100000000  iterations      18  ns/op

[github-actions]

==== C8 test coverage ====
Statements: 72.75% ( 17405/23925 )
Branches : 71.28% ( 2045 /2869 )
Functions : 72.03% ( 654 /908 )
Lines : 72.75% ( 17405 /23925 )