SUMO-282478: app migration updated docs

[sachin-sumologic]

Purpose of this pull request

Adds a new Amazon Overview app doc and updates several existing AWS integration docs.

New content

• New amazon-overview.md doc for the Amazon Overview app, with two dashboard sections: AWS Account Overview and AWS Region Overview
• New dashboard screenshots for both Amazon Overview dashboards
• CID redirect added for /cid/1170 → /docs/integrations/amazon-aws/amazon-overview
• Sidebar updated to include the new Amazon Overview page

Updated content

• elasticache.md, lambda.md, network-load-balancer.md, rds.md, sns.md, sqs.md — updated app installation and dashboard sections

Select the type of change

• Minor Changes - Typos, formatting, slight revisions
• Update Content - Revisions, updating sections
• New Content - New features, sections, pages, tutorials
• Site and Tools - .clabot, version updates, maintenance, dependencies, new packages for the site (Docusaurus, Gatsby, React, etc.)

Ticket (if applicable)

SUMO-282478

[jpipkin1]

Approved, @sachin-sumologic. I made some minor changes (see this commit).

[amee-sumo]

LGTM

[kimsauce]

Hi @sachin-sumologic !

I saw you'd updated Amazon SQS from <AppInstall/> to
<AppInstallV2/>.

Just double-checking - will you be updating the other docs to<AppInstallV2/> as well?

[sachin-sumologic]

Hi @sachin-sumologic !

I saw you'd updated Amazon SQS from <AppInstall/> to <AppInstallV2/>.

Just double-checking - will you be updating the other docs to<AppInstallV2/> as well?

Yes, we will be updating to <AppInstallV2/> today

[sachin-sumologic]

Hi @sachin-sumologic !
I saw you'd updated Amazon SQS from <AppInstall/> to <AppInstallV2/>.
Just double-checking - will you be updating the other docs to<AppInstallV2/> as well?

Yes, we will be updating to <AppInstallV2/> today

addressed these comments.