feat: enable aws cli completer

Add a .bashrc to the home folder so that the completer is enabled each time the terminal is connected.

see
https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-completion.html

Author: lcenchew

.bashrc

@@ -0,0 +1 @@
+complete -C /usr/local/bin/aws_completer aws

.devcontainer/devcontainer.json

@@ -10,13 +10,14 @@
 	"features": {
 		"ghcr.io/devcontainers/features/aws-cli:1": {},
 		"ghcr.io/devcontainers-contrib/features/aws-cdk:2": {}
-	}
+	},
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	// "forwardPorts": [],
 
 	// Use 'postCreateCommand' to run commands after the container is created.
 	// "postCreateCommand": "uname -a",
+	"postCreateCommand": "cp .bashrc ~/"
 
 	// Configure tool-specific properties.
 	// "customizations": {},