Spew full structure for all flow_errors

[ilidemi]

Chasing DB errors is getting ridiculous lately, adding spew logging that looks like this:

(*utils.connectionError)(0x14000e024c0)({
  message: (string) (len=25) "connection pool exhausted",
  wrapped: (*connpostgres.queryExecutionError)(0x14000e024a0)({
    query: (string) (len=33) "SELECT * FROM users WHERE id = $1",
    wrapped: (*errors.errorString)(0x140008136b0)({
      s: (string) (len=15) "network timeout"
    })
  })
})

[jgao54]

good idea 👍