feat: add large sample database and setup script

[JohnVillalovos]

Add sample-data-large-utf8.sql with 148 new resources, 18 users, 5 groups, 2 schedules, resource types, and resource groups for development and testing with more realistic data volumes.

Add database_schema/setup-database.sh helper script that automates fresh database setup with optional sample data loading.

Add shellcheck and shfmt linting for shell scripts in CI.

Update INSTALLATION.rst and FAQ.rst to document the new sample data file and setup script.

[Copilot]

Pull request overview

Adds a larger, more realistic development dataset and a helper to bootstrap a fresh database, with CI enforcement for shell script lint/formatting and accompanying documentation updates.

Changes:

• Add database_schema/sample-data-large-utf8.sql to seed a larger demo dataset (meant to be loaded after sample-data-utf8.sql).
• Add database_schema/setup-database.sh to automate schema creation, upgrades, and optional sample data loading.
• Update docs and CI: document the new dataset/script; add shellcheck and shfmt steps to GitHub Actions.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
docs/source/INSTALLATION.rst	Documents the new large sample dataset and the setup helper script.
docs/source/FAQ.rst	Adds the large dataset to the recommended install order; mentions the helper script.
database_schema/setup-database.sh	New automation script to recreate DB, apply upgrades, and optionally load sample data.
database_schema/sample-data-large-utf8.sql	New SQL seed file for larger sample data volumes.
.github/workflows/lint-and-analyse-php.yml	Adds shell script linting/formatting (shellcheck + shfmt) to CI.

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[Copilot]

Pull request overview

Adds tooling and documentation to simplify spinning up a fresh development database with a significantly larger sample dataset for more realistic testing and development workflows.

Changes:

• Add database_schema/sample-data-large-utf8.sql to provide a larger, additive demo dataset on top of sample-data-utf8.sql.
• Add database_schema/setup-database.sh to automate schema creation, upgrades, initial data, and optional sample data loading.
• Extend CI workflow to lint shell scripts with shellcheck and shfmt, and update docs (INSTALLATION/FAQ) to document the new dataset and helper script.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 6 comments.

Show a summary per file

File	Description
docs/source/INSTALLATION.rst	Documents the new large sample dataset and the setup helper script.
docs/source/FAQ.rst	Adds the new sample-data load step and points to the helper script as an alternative.
database_schema/setup-database.sh	New helper script to drop/recreate DB, apply schema+upgrades, and load optional sample data.
database_schema/sample-data-large-utf8.sql	New larger dataset (users/groups/resources/types/groups/permissions/etc.) intended for dev/test use.
.github/workflows/lint-and-analyse-php.yml	Installs and runs shellcheck + shfmt over repository shell scripts in CI.

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