## Description
This PR adds:
- Google sheet file picker needs to be shown on blank page
- Refactored file picker code into a separate component called
GoogleSheetFilePicker
**How to test:**
For selected sheets scope, once authorisation is complete, user would be
taken to file picker page, with blank background as per
[designs](https://www.figma.com/file/TcFhqEbAc8ymHTRF5wR1qv/Limited-GSheet-Access?node-id=506-32532&t=0skI0T6o9VJhJhTT-0)
> Add a TL;DR when description is extra long (helps content team)
Fixes#21065
Media
> A video or a GIF is preferred. when using Loom, don’t embed because it
looks like it’s a GIF. instead, just link to the video
## Type of change
- New feature (non-breaking change which adds functionality)
## How Has This Been Tested?
- Manual
### Test Plan
> Add Testsmith test cases links that relate to this PR
### Issues raised during DP testing
> Link issues raised during DP testing for better visiblity and tracking
(copy link from comments dropped on this PR)
## Checklist:
### Dev activity
- [x] My code follows the style guidelines of this project
- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas
- [ ] I have made corresponding changes to the documentation
- [x] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [x] PR is being merged under a feature flag
### QA activity:
- [ ] Test plan has been approved by relevant developers
- [ ] Test plan has been peer reviewed by QA
- [ ] Cypress test cases have been added and approved by either SDET or
manual QA
- [ ] Organized project review call with relevant stakeholders after
Round 1/2 of QA
- [ ] Added Test Plan Approved label after reveiwing all Cypress test
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Co-authored-by: “sneha122” <“sneha@appsmith.com”>
39ab3947ae