Bug fix: Add settings.template.json and tutorials into UWLab

[patrickhaoy]

Description

Reorders .vscode/.gitignore so the *.json rule comes before the !tools/settings.template.json exception. Previously, the exception was overridden by the later *.json rule, so settings.template.json was ignored.

Adds tutorials into UWLab.

Fixes #24

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read and understood the contribution guidelines
• I have run the pre-commit checks with ./uwlab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there