CG-18227: Update Slack integration page with Add to Slack button#1092

codegen-sh[bot] wants to merge 5 commits intodevelopcodegen-sh/codegen:developfrom

codegen-cg-18227-f5-create-app-landing-page-with-add-to-slack-buttoncodegen-sh/codegen:codegen-cg-18227-f5-create-app-landing-page-with-add-to-slack-buttonCopy head branch name to clipboard