Add Hashibot configuration (hashicorp#157)

* Add Hashibot configuration

* Update .hashibot.hcl

Co-authored-by: Paul Tyng <ptyng@hashicorp.com>

Co-authored-by: Paul Tyng <ptyng@hashicorp.com>

.hashibot.hcl

@@ -0,0 +1,29 @@
+behavior "remove_labels_on_reply" "remove_stale" {
+  labels               = ["waiting-response", "stale"]
+  only_non_maintainers = true
+}
+
+poll "closed_issue_locker" "locker" {
+  schedule                      = "0 3 * * *" # daily
+  closed_for                    = "720h" # 30 days
+  no_comment_if_no_activity_for = "1440h" # 60 days
+  max_issues                    = 500
+  sleep_between_issues          = "5s"
+
+  message = <<-EOF
+    I'm going to lock this issue because it has been closed for _30 days_ ⏳. This helps our maintainers find and focus on the active issues.
+    If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the context necessary to investigate further.
+  EOF
+}
+
+poll "stale_issue_closer" "closer" {
+    schedule = "0 3 * * *" # daily
+    labels = ["stale", "waiting-response"]
+    no_reply_in_last = "2160h" # 90 days
+    max_issues = 500
+    sleep_between_issues = "5s"
+    message = <<-EOF
+    I'm going to close this issue due to inactivity (_90 days_ without response ⏳ ). This helps our maintainers find and focus on the active issues.
+    If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the context necessary to investigate further.
+    EOF
+}