Add discoverability of the IDE extensions from Create Serverless form

Description

Add below IDE extensions in create serverless form,

• VSCode Knative IDE extension: https://marketplace.visualstudio.com/items?itemName=redhat.vscode-knative
• IntelliJ Knative Plugin: https://plugins.jetbrains.com/plugin/16476-knative--serverless-functions-by-red-hat

Acceptance Criteria

1. In create serverless form add above IDE extensions
2. On click of the link, user needs to take to respective pages
3. Add e2e tests for that

Additional Details: