DOC-58 Rename Connecting section, add IDE Extensions content

Rename the section directory from connecting-to-localstack to
connecting (shorter URL), rename its sidebar group to "IDE
Extensions", and add an "AWS Toolkit for VS Code" page so the
section covers both available IDE extensions.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: peter-smith-phd

astro.config.mjs

@@ -340,37 +340,37 @@ export default defineConfig({
               items: [
                 {
                   label: 'Overview',
-                  slug: 'aws/connecting-to-localstack',
+                  slug: 'aws/connecting',
                 },
                 {
                   label: 'AWS CLI',
-                  slug: 'aws/connecting-to-localstack/aws-cli',
+                  slug: 'aws/connecting/aws-cli',
                 },
                 {
                   label: 'AWS SDKs',
                   autogenerate: {
-                    directory: '/aws/connecting-to-localstack/aws-sdks',
+                    directory: '/aws/connecting/aws-sdks',
                   },
                   collapsed: true,
                 },
                 {
                   label: 'Infrastructure as Code',
                   autogenerate: {
-                    directory: '/aws/connecting-to-localstack/infrastructure-as-code',
+                    directory: '/aws/connecting/infrastructure-as-code',
                   },
                   collapsed: true,
                 },
                 {
                   label: 'LocalStack Console',
                   autogenerate: {
-                    directory: '/aws/connecting-to-localstack/console',
+                    directory: '/aws/connecting/console',
                   },
                   collapsed: true,
                 },
                 {
-                  label: 'LocalStack Toolkit (IDEs)',
+                  label: 'IDE Extensions',
                   autogenerate: {
-                    directory: '/aws/connecting-to-localstack/ides',
+                    directory: '/aws/connecting/ides',
                   },
                   collapsed: true,
                 },