feat(fivetran/google_sheets): add Google Sheets support and API client integration

[askumar27]

• Introduced Google Sheets as a new data platform with associated constants and logo.
• Implemented Fivetran API client for handling Google Sheets connections.
• Enhanced Fivetran source to emit dataset entities for Google Sheets connectors.
• Added response models for Fivetran connection details specific to Google Sheets.
• Updated configuration to include Google Sheets in the data platform mappings.

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
8246	1	8245	73

View the top 1 failed test(s) by shortest run time

dataset health test cypress/e2e/mutations/dataset_health.js::cypress/e2e/mutations/dataset_health.js

Stack Traces | 20.4s run time

2025-10-16T06:46:10.351Z
Timed out retrying after 10000ms: Expected to find content: 'Assertions 1 of 1 assertions are failing' but never did.

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[alwaysmeticulous]

✅ Meticulous spotted 0 visual differences across 958 screens tested: view results.

Meticulous evaluated ~8 hours of user flows against your PR.

_{Expected differences? Click here. Last updated for commit f25ba17. This comment will update as new commits are pushed.}

[codecov]

Bundle Report

Changes will increase total bundle size by 616 bytes (0.0%) ⬆️. This is within the configured threshold ✅

Detailed changes

Bundle name	Size	Change
datahub-react-web-esm	28.59MB	616 bytes (0.0%) ⬆️

Affected Assets, Files, and Routes:

view changes for bundle: datahub-react-web-esm

Assets Changed:

Asset Name	Size Change	Total Size	Change (%)
assets/index-*.js	616 bytes	18.93MB	0.0%

Files in assets/index-*.js:

• ./src/app/ingest/source/builder/constants.ts → Total Size: 6.76kB

• ./src/images/google-sheets-logo.png → Total Size: 574 bytes