feat: update faqs (with categorization) (#618)

* feat: update faqs (with categorization)

Signed-off-by: Adam Setch <adam.setch@outlook.com>

* feat: update faqs (with categorization)

Signed-off-by: Adam Setch <adam.setch@outlook.com>

* feat: update faqs (with categorization)

Signed-off-by: Adam Setch <adam.setch@outlook.com>

* feat: update faqs (with categorization)

Signed-off-by: Adam Setch <adam.setch@outlook.com>

---------

Signed-off-by: Adam Setch <adam.setch@outlook.com>

Author: setchy

src/faqs/1.md

@@ -0,0 +1,12 @@
+---
+title: "How can I contribute to Gitify?"
+category: "Contributing"
+order: 1
+---
+You can contribute to Gitify by opening an issue or pull request on GitHub at [gitify-app/gitify](https://github.com/gitify-app/gitify).
+
+Before contributing, please review our [CONTRIBUTING.md](https://github.com/gitify-app/gitify/blob/main/CONTRIBUTING.md) guide for details on branch naming, the PR process, and code style.
+
+Check out our [open issues](https://github.com/gitify-app/gitify/issues) and see if there is an existing idea you would like to work on.
+
+Not a developer? You can still help by reporting bugs, improving documentation, or starring and sharing the project.

src/faqs/2.md

@@ -0,0 +1,12 @@
+---
+title: "What authentication methods does Gitify support?"
+category: "Getting Started"
+order: 1
+---
+Gitify offers three ways to authenticate with GitHub:
+
+- **Login with GitHub** — The easiest option. Uses the OAuth Device Flow: Gitify generates a code, opens `github.com/login/device` in your browser, and completes authentication automatically. Supports GitHub Cloud only.
+- **Personal Access Token (PAT)** — Authenticate with a token generated in your GitHub account settings. Supports both GitHub Cloud and GitHub Enterprise Server.
+- **OAuth App** — Authenticate using a Client ID and Client Secret from a GitHub OAuth App you create. Supports both GitHub Cloud and GitHub Enterprise Server.
+
+If you are unsure which method to use, **Login with GitHub** is recommended for most users on GitHub Cloud. For GitHub Enterprise Server, use a PAT or OAuth App.

src/faqs/3.md

@@ -0,0 +1,12 @@
+---
+title: "Does Gitify support GitHub Enterprise Server?"
+category: "Getting Started"
+order: 3
+---
+Yes. Gitify supports both GitHub Cloud and **GitHub Enterprise Server (GHES)**.
+
+When signing in via **Personal Access Token** or **OAuth App**, you will see a _Hostname_ field that defaults to `github.com`. Replace this with your GHES hostname (e.g. `github.mycompany.com`) to connect to your Enterprise instance.
+
+> **Note:** The **Login with GitHub** (Device Flow) method only supports GitHub Cloud and does not expose a hostname field.
+
+Multiple accounts across different hostnames (e.g. `github.com` and your GHES instance) can be signed in simultaneously — see _"How do I add multiple GitHub accounts?"_ for details.