Remove save author implementations

[rekby]

No description provided.

[Copilot]

Pull Request Overview

This PR removes author functionality from the issue management system by eliminating the TitleAuthor record class and simplifying the data model to work with issue titles only.

• Removed the TitleAuthor record class entirely
• Simplified saveAll method to accept a list of strings (titles) instead of TitleAuthor objects
• Updated the database schema and queries to remove author-related fields

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
TitleAuthor.java	Complete removal of the TitleAuthor record class
IssueYdbRepository.java	Modified saveAll method to work with strings instead of TitleAuthor objects, removed author field from schema
Application.java	Updated saveAll call to pass string titles directly instead of TitleAuthor instances

Comments suppressed due to low confidence (1)

dev-1/lesson-8.1/java/src/main/java/tech/ydb/app/IssueYdbRepository.java:76

• The INSERT statement appears to be missing the author column from the table schema, but the table may still have this column defined elsewhere. This could cause SQL errors if the table schema hasn't been updated to remove the author column.

                        UPSERT INTO issues