feat: add org profile landing page

profile/README.md: tool roster (Plaster, PSDepend) with status badges,
adopt-your-tool CTA linking to the adoption request template,
help-wanted CTA linking to good-first-issues and help-wanted across
the org, links to governance and CoC.

Author: HeyItsGilbert

profile/README.md

@@ -0,0 +1,32 @@
+# PowerShellOrg
+
+PowerShellOrg is a community-run GitHub organization that adopts and maintains open-source PowerShell tools that would otherwise go unmaintained.
+
+## Maintained tools
+
+| Module | Description | Status |
+|---|---|---|
+| [Plaster](https://github.com/PowerShellOrg/Plaster) | Template-based scaffolding engine for PowerShell projects and modules | ![Active](https://img.shields.io/badge/status-active-brightgreen) |
+| [PSDepend](https://github.com/PowerShellOrg/PSDepend) | Dependency management for PowerShell scripts and modules | ![Active](https://img.shields.io/badge/status-active-brightgreen) |
+
+## Want us to adopt your tool?
+
+If you maintain (or used to maintain) a PowerShell tool that needs a new home, we want to hear from you.
+
+Read the [adoption criteria](https://github.com/PowerShellOrg/.github/blob/main/docs/adoption-criteria.md) first, then open an **[Adoption Request](https://github.com/PowerShellOrg/.github/issues/new?template=tool_adoption_request.yml)**.
+
+We respond to all requests within 7 days and make a decision within 30.
+
+## Want to help?
+
+Every project in this org accepts contributions. A good place to start:
+
+- **[Good first issues across the org](https://github.com/issues?q=is%3Aopen+is%3Aissue+org%3APowerShellOrg+label%3A%22good+first+issue%22)** — smaller, well-scoped tasks
+- **[Help wanted across the org](https://github.com/issues?q=is%3Aopen+is%3Aissue+org%3APowerShellOrg+label%3A%22help+wanted%22)** — tasks where we've explicitly asked for a PR
+
+See [CONTRIBUTING.md](https://github.com/PowerShellOrg/.github/blob/main/.github/CONTRIBUTING.md) for how we work.
+
+## Governance and community
+
+- [Governance model](https://github.com/PowerShellOrg/.github/blob/main/.github/GOVERNANCE.md) — how decisions get made, roles, maintainer lifecycle
+- [Code of Conduct](https://github.com/PowerShellOrg/.github/blob/main/.github/CODE_OF_CONDUCT.md) — how we treat each other