Fix PyPI project links: Documentation URL, add Changelog/Homepage/Issues

The Documentation link was missing /blob/master/ and pointed nowhere.
Add Changelog (HISTORY.rst), Homepage and Issue Tracker entries so the
PyPI sidebar is complete from the next release on.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

Author: stonebig

pyproject.toml

@@ -29,8 +29,11 @@ description="a graphic SQLite and DuckDB Client in 1 Python file"
 keywords = ["sqlite", "duckdb", "gui", "ttk", "sql"]
 
 [project.urls]
-Documentation = "https://github.com/stonebig/sqlite_bro/README.rst"
+Homepage = "https://github.com/stonebig/sqlite_bro"
+Documentation = "https://github.com/stonebig/sqlite_bro/blob/master/README.rst"
+Changelog = "https://github.com/stonebig/sqlite_bro/blob/master/HISTORY.rst"
 Source = "https://github.com/stonebig/sqlite_bro"
+"Issue Tracker" = "https://github.com/stonebig/sqlite_bro/issues"
 
 [project.scripts]
 sqlite_bro = "sqlite_bro.sqlite_bro:_main"