Add new CLI arg to control what warnings should be shown for deprecated outputs/variables (#2705)

Signed-off-by: yottta <andrei.ciobanu@opentofu.org>
Signed-off-by: Andrei Ciobanu <andrei.ciobanu@opentofu.org>

internal/command/e2etest/testdata/deprecated-values/mod/main.tf

@@ -0,0 +1,9 @@
+variable "input" {
+  default = "world"
+  deprecated = "This var is deprecated"
+}
+
+output "output" {
+  value = "${var.input}"
+  deprecated = "this output is deprecated"
+}