fix: update site metadata and image references for clarity

[rajnandan1]

This pull request includes various improvements and cleanups across multiple files, primarily focusing on code formatting and minor content updates. The most important changes involve reformatting code for better readability and updating some default values and descriptions.

Code Formatting Improvements:

• src/lib/components/manage/themeInfo.svelte: Reformatted multiple instances of HTML and JavaScript code to improve readability by aligning text and removing unnecessary line breaks. [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13]

Content Updates:

• src/lib/server/db/seedSiteData.js: Updated default meta tag values and image URLs, and changed the navigation link text from "Login" to "Setup Kener". [1] [2] [3] [4]

Code Cleanup:

• src/routes/(manage)/manage/(account)/setup/submit/+server.js: Consolidated import statements and improved the readability of the POST function by reformatting code and updating the redirect URL. [1] [2] [3] [4]