Create a populated pref file

[SharonStrats]

The preference file that was getting created was blank, this populates the file as done in the server upon registration for a new account.

[Copilot]

Pull request overview

This PR aims to ensure newly created Solid preferences resources are populated with default triples (and corresponding type index resources are created), instead of leaving the Preferences.ttl document blank.

Changes:

• Add logic in profileLogic.loadPreferences() to ensure the preferences document exists and (conditionally) initialize default preferences/type-index statements.
• Add defaults initialization that inserts space:ConfigurationFile, a title, and links to public/private type indexes, and creates the index docs if missing.
• Update profile logic tests to assert the additional PATCH/PUT requests for populating Preferences.ttl and creating type index files.

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File	Description
src/profile/profileLogic.ts	Adds preferences initialization and doc-existence handling during loadPreferences() to populate defaults and create type index docs.
test/profileLogic.test.ts	Updates tests to validate PATCH contents for Preferences.ttl and presence of PUTs for preferences/type index resources.

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[Copilot]

Pull request overview

Copilot reviewed 3 out of 3 changed files in this pull request and generated 5 comments.

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