docs: 📝 add landing page to website (#107)

# Description

Closes #22

Needs a thorough review.

## Checklist

- [x] Formatted Markdown
- [x] Ran `just run-all`

---------

Co-authored-by: Signe Kirk Brødbæk <40836345+signekb@users.noreply.github.com>
Co-authored-by: martonvago <57952344+martonvago@users.noreply.github.com>

Author: 3 people

_metadata.yml

@@ -1,3 +1,6 @@
 gh:
   repo: seedcase-flower
   org: seedcase-project
+
+links:
+  github: "https://github.com/seedcase-project/seedcase-flower"

index.qmd

@@ -1,3 +1,88 @@
 ---
-title: "Welcome!"
+toc: false
+page-layout: custom
 ---
+
+::::: landing-page-block
+:::: hero-text
+::: text-center
+![](_extensions/seedcase-project/seedcase-theme/logos/flower/icon.svg){fig-alt="Seedcase Flower logo."
+width="150px"}
+
+![](_extensions/seedcase-project/seedcase-theme/logos/flower/font.svg){fig-alt="Seedcase Flower font."
+height="50px"}
+
+## Turn your Data Package metadata into human-readable documentation
+
+[Overview](/docs/index.qmd){.btn .about-link} [Explore
+guide](/docs/guide/index.qmd){.btn .about-link}
+:::
+::::
+:::::
+
+:::: landing-page-block
+::: {#hero-heading}
+{{< include /docs/includes/_badges.qmd >}}
+:::
+::::
+
+::::: hero-banner
+:::: landing-page-block
+::: hero-text
+Flower is a Python package and command-line interface (CLI) that
+generates human-readable documentation from your [Data
+Package](https://datapackage.org/) metadata.
+
+## :sparkles: Key features
+
+-   Create structured and human-friendly documents from a Data Package's
+    `datapackage.json` file.
+-   Display the contents of a `datapackage.json` file in a
+    human-friendly way directly in the terminal.
+-   Use through the command line for convenience, speed, and automation.
+-   Comes with multiple built-in styles and supports custom styles with
+    [Jinja2](https://jinja.palletsprojects.com/en/stable/) templates.
+-   Configurable through the `.flower.toml` file for reproducible
+    document generation for your Data Package.
+
+Flower focuses on generating documents. For rendering, publishing, or
+deploying, see our
+[`template-data-package`](https://template-data-package.seedcase-project.org/).
+:::
+::::
+:::::
+
+::::: landing-page-block
+:::: hero-text
+## About the Seedcase Project
+
+Flower is part of the [**Seedcase
+Project**](https://seedcase-project.org), which helps research projects
+manage and process data in line with the
+[FAIR](https://www.go-fair.org/fair-principles/) principles.
+
+This package works as a standalone tool but is also integrated into our
+[`template-data-package`](https://template-data-package.seedcase-project.org/)
+template, which makes it easier to set up, build, and manage a Data
+Package.
+
+::: text-center
+[Check out Seedcase](https://seedcase-project.org/){.btn .about-link}
+[Explore the
+template](https://template-data-package.seedcase-project.org/){.btn
+.about-link}
+:::
+::::
+:::::
+
+::::: hero-banner
+:::: landing-page-block
+::: hero-text
+## Want to contribute?
+
+We would love your feedback or contributions! Head over to the [GitHub
+repository]({{< meta links.github >}}) to share your ideas or contribute
+code. Your input makes us better!
+:::
+::::
+:::::