[Proposal] Introduce a new directive ngx_ja3 [on|off]

[dedok]

Description

We are planing to use this module in the production soon. But we also need a Nginx's configuration handler to off and off it for different server blocks and location block.

Proposal

Introduce a directive ngx_ja3 [on|off] for http, server, location contexts, and it should allow to off or on calculation of ja3. The default value is on.

[phuslu]

Strongly agree, it's useful when we try to add ngx_ja4 support.

@dedok I try to add you as collaborator, please see https://github.com/phuslu/nginx-ssl-fingerprint/invitations and accept if your are happy.

[dedok]

Accepted. I will introduce this directive and will send PR for the review. But it will be happened at the end of next week. Have some other tickets to go.

[dedok]

This will be done probably this week, since it's really important for multi tenant configurations. Also readme.md should be updated as well.

[dedok]

Probably I will introduce it together with #61. It seems we have a few possibility to off this feature; the first one: introduce a directive, but problems is that location conf context and seems server context are not available in ssl sockets (need to double check it). The second approach is: introduce an options for listener, e.i. listen 443 ssl ja3_off; need research a bit.