feat: app creation dx improvements

[nimish-ks]

🔍 Overview

This PR improves the product experience by - creating an example application when a user (owner) first signups and creates an application, get's rid of placeholder welcome screens (meant to solve legacy post signup redirection issues) along with minor changes to app creation flow.

💡 Proposed Changes

• Create a new app (example-secrets) with development, staging, production environments and populate them with example secrets when a user first signsup and creates an organization
• Removed the SuccessPane that was meant to be a middle stop from when a user has completed the signup flow and before they are redirected to the app home screen
• Exclude the example app from the getting started flow orientation flow and prompt the user subtly to create their first app manually
• Refactored the create new app modal: removed the create example secrets toggle, added a label to indicate the app secrets are encrypted with end-to-end encryption by default, added a info box explaining that the app will be initialized with development, staging, production environments

🖼️ Screenshots or Demo

🧪 Testing

• Tested the post signup redirection on Chrome (chromium) and Firefox
• Tested signup flows where the password saved/unsaved by the user

🎯 Reviewer Focus

@rohan-chaturvedi This PR adds a app name as a param to the graphql query: https://github.com/phasehq/console/pull/429/files#diff-92f0d4418d07fba628f751b36d6739dcb85620bba824c9007bd63cf0fc3578b9R4, lmk if need to regenerate types or something on the backend.

➕ Additional Context

Provide any additional information that might be helpful for reviewers and future contributors, such as links to related issues, discussions, or resources.

✨ How to Test the Changes Locally

• Sign up and create a new account - verify that the post onboarding redirection send you to your team home, verify that the create a new app step in getting started is not completed (because of the example app), go to the apps screen and verity that example-secrets app is present.
• Open the example-secrets app, ensure the dummy secrets have been created across development, staging and production environments
• Create a new application, verify that the development, staging, production environments are present with no secrets (blank), add members and service account to the app, verify secret access inside of environments from a user personal access token, and service account token.
• Go to the home screen and verify if create a new app step has been completed after creating a new application manually

💚 Did You...

• Ensure linting passes (code style checks)?
• Update dependencies and lockfiles (if required)
• Regenerate graphql schema and types (if required)
• Verify the app builds locally?
• Manually test the changes on different browsers/devices?