feat request: more detailed output result

[lowlighter]

It would be nice to have a more detailed output which show all steps, like range steps and custom executor steps, the current one is pretty barebone and make it hard to know what has been run.

Example:

$ venom run test/ports.yaml 
• Testsuite
!  • Testcase FAILURE (1/2 tests succeded)
+    • 123 SUCCESS
+      • tcp SUCCESS
+      • udp SUCCESS
!    • 53 FAILURE (1/2 tests succeded)
+      • tcp SUCCESS
-      • udp FAILURE

# Test suite
testcases:
  - name: Testcase
    steps:
      - type: checkPort
        host: 1.1.1.1
        range: [80, 443]
        port: '{{.value}}'

---
# Custom executor
executor: checkPort
steps:
  - name: {{.value.protocol}}
    type: exec
    script: nc -vz{{.value.arg}} {{.input.host}} {{.input.port}}
    range:
      - protocol: tcp
        arg: ""
      - protocol: udo
        arg: "u"