Support Adding Multiple SSL Certificates at Runtime - CLI

[Pragadesh-45]

I have checked the following:

• [X] I've searched existing issues and found nothing related to my issue.

Describe the feature you want to add

Implement the ability to add multiple SSL certificates during runtime. This enhancement allows users to store SSL certificate details in a collection and execute them using the CLI.

eg: bru run --client-cert-config clientCertConfig.json

Current scenario:

In the latest versions, there is a need to store the Certificate inside a collection

Mockups or Images of the feature

mockup clientCertConfig.json

{
  "enabled": true,
  "certs": [
    {
      "domain": "google.com",
      "type": "cert",
      "certFilePath": "certs/server_5.crt",
      "keyFilePath": "private/server_5.key",
      "passphrase": "yes, i got uploaded!--google"
    },
    {
      "domain": "usebruno.com",
      "type": "cert",
      "certFilePath": "certs/server_1.crt",
      "keyFilePath": "private/server_1.key",
      "passphrase": "yes, i got uploaded--usebruno!"
    },
    {
      "domain": "g.cn",
      "type": "pfx",
      "pfxFilePath": "pfx/server_3.pfx",
      "passphrase": "yes, i got uploaded!--pfx--g.cn"
    }
  ]
}