Add custom completions for aws-cli

Author: Yethal

custom-completions/aws/aws-completions.nu

@@ -0,0 +1,13 @@
+def complete-commands [
+    context: string
+] {
+    with-env {COMP_LINE: $context} {
+        aws_completer
+        | lines
+        | each {|x| $"($x) "}
+    }
+}
+
+export extern "aws" [
+    ...command: string@complete-commands
+]