FUZZ: Override HTTP request method using flag

[ph-hitachi]

Please describe your feature request:

i'm working on one project and trying to use Fuzz Templates for vulnerability enumeration and all HTTP request method is hard coded:

http:
  - method: GET
    path:
      - "{{BaseURL}}"

Describe the use case of this feature:

nuclei -u https://example.com -data "param=FUZZ" -x POST

i read some commands but i don't see this feature, i don't know if this already exists but it will helpful

### Tasks

[GeorginaReeder]

This is great, thank you for the feature request @ph-hitachi ! We'll take a look into this :)