Added support for Regex Match Statements (#63)

* Added support for Regex Match Statements

* Lint and other fixes

Co-authored-by: Tomasz Rychlewicz <tomasz.rychlewicz@explaineverything.com>

README.md

@@ -257,6 +257,27 @@ module "waf" {
       rule_group_reference_statement = {
         arn = "arn:aws:wafv2:eu-west-1:111122223333:regional/rulegroup/rulegroup-test/a1bcdef2-1234-123a-abc0-1234a5bc67d8"
       }
+    ### Regex Match Rule example
+    {
+      name     = "RegexMatchRule-9"
+      priority = "9"
+
+      action = "allow"
+
+      visibility_config = {
+        cloudwatch_metrics_enabled = false
+        metric_name                = "RegexMatchRule-metric"
+        sampled_requests_enabled   = false
+      }
+
+      byte_match_statement = {
+          field_to_match = {
+            uri_path = "{}"
+          }
+          regex_string         = "/foo/"
+          priority              = 0
+          type                  = "NONE"
+        }
     },
     ### Size constraint Rule example
     # Refer to https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/wafv2_web_acl#size-constraint-statement