support to display known after apply in-place update

[takaishi]

fix: #10

The plan result often has in-place update with known after apply .

  # env_variable.test will be updated in-place
  ~ resource "env_variable" "test" {
        id   = "07ec30c9d869e0f6392f"
      ~ name = "07ec30c9d869e0f6392f" -> (known after apply)
    }

But terraform-j2md can't interpret known after apply now, so the detail looks like deleting the field.

# env_variable.test will be updated in-place
@@ -1,6 +1,5 @@
 {
   "id": "07ec30c9d869e0f6392f",
-  "name": "07ec30c9d869e0f6392f",
   "value": "REDACTED_SENSITIVE"
 }
 

This PR changes to display known after apply as after changes.

# env_variable.test will be updated in-place
@@ -1,6 +1,6 @@
 {
   "id": "07ec30c9d869e0f6392f",
-  "name": "07ec30c9d869e0f6392f",
+  "name": "(known after apply)",
   "value": "REDACTED_SENSITIVE"
 }
 

[okkez]

LGTM

[akihiro17]

LGTM

[takaishi]

thanks!

[takaishi]

I released v0.0.7 https://github.com/reproio/terraform-j2md/releases/tag/v0.0.7