Rename Couchbase.Text.Json to Couchbase.Core

[emilienbev]

This PR is a "proposal" to rename the Couchbase.Text.Json inside the repository to Couchbase.Core to prepare for when we separate the project in its own repository.

[Copilot]

Pull Request Overview

This PR renames the Couchbase.Text.Json namespace and project to Couchbase.Core in preparation for separating the project into its own repository.

• Updates all namespace declarations from Couchbase.Text.Json to Couchbase.Core
• Updates using statements across all files to reference the new namespace
• Updates project references and solution file to reflect the name change

Reviewed Changes

Copilot reviewed 45 out of 46 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/Couchbase.Analytics.UnitTests/Internal/*.cs	Updated using statements to reference Couchbase.Core.Json
tests/Couchbase.Analytics.FunctionalTests/*.cs	Added missing namespace declarations and updated using statements
src/Couchbase.Core/*.cs	Updated namespace declarations from Couchbase.Text.Json to Couchbase.Core
src/Couchbase.Analytics/*.cs	Updated using statements to reference new Couchbase.Core namespaces
fit/Couchbase.Analytics.Performer/*.cs	Updated using statements to reference new Couchbase.Core namespaces
Project files	Updated project references and solution file entries

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[Copilot]

[nitpick] Using statements should be ordered alphabetically. System.Globalization should come before System.Text.Json statements.

Suggested change

	using System.Globalization;
	using System.Text.Json;
	using System.Text.Json;
	using System.Globalization;