ENG-44961: Resource provider for custom session identification rule

[meghana-pedduri]

Example usage:

resource "traceable_session_identification_custom_rule" "example" {
  name             = "example-session-rule"
  description      = "This is an example session identification rule"
  environment_names = ["dev", "prod"]
  service_names     = ["service1", "service2"]
  url_match_regexes = ["^/api/.*$", "^/internal/.*$"]

   token_extraction_condition_list {
     condition_request_header {
       key      = "X-Example-Header"
       operator = "EQUALS"
       value    = "example-value"
     }
   }

  custom_json = "{}"

}```
### **Schema:**
**Required:**
`name:` (string) name of the rule
`service_names: `(list of string) list of all the services the rule would be applicable for
` environment_names:` (list of string) list of all the env the rule would be applicable for
`custom_json:` (string): custom json as session token
**Optional:**
`description: `(string) description of the rule
`url_match_regexes:` (list of strings) the regex values of the url indicating its segment values that we would choose to redact
`token_extraction_condition_list: `(list of objects) the conditions to satisfy token extraction