Initial primitive module implementation for aws_eks_cluster (#1)

- Fully featured module implementation
- Simple test scenario
- Latest iteration of copilot authored module incorporating feedback from the team

Author: ben-vaughan-nttd

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+  - package-ecosystem: "terraform"
+    directory: "/"
+    schedule:
+      interval: "weekly"