feat: completed docs

docs/guide/install.md

@@ -0,0 +1,17 @@
+# Installing Blitzkrieg
+
+It's easy as 1, 2, 3!
+
+## Step 1
+
+Join a server that already has Blitzkrieg or [join our official Discord server](https://discord.gg/nDt7AjGJQH).
+
+## Step 2
+
+View the bot's profile and click "Add to Server".
+
+<video src="https://i.imgur.com/Zq0P3m2.mp4" autoplay loop muted width=320 title="how to install"></video>
+
+## Step 3
+
+Review the permissions the bot is asking for and add it to your server!

docs/guide/permissions.md

@@ -0,0 +1,6 @@
+# Permissions
+
+The following Discord permissions are required by the bot to ensure full functionality:
+
+- Attach files
+- View channels