Add magnification and largesize defaults for Dock

Author: chrisbloom7

docs/dock/images/largesize/76.png

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+---
+title: Magnification size | Dock
+description: Set the icon size of magnified Dock items in pixels.
+head:
+  - - meta
+    - property: 'og:title'
+      content: macOS defaults > Dock > Magnification size
+  - - meta
+    - property: 'og:description'
+      content: Set the icon size of magnified Dock items in pixels.
+---
+
+# Magnification size
+
+Set the icon size of magnified Dock items in pixels.
+
+- **Tested on macOS**:
+  - Seqoia
+- **Parameter type**: int
+
+## Requirements
+
+This setting will have no effect unless the following conditions are met:
+
+- [`com.apple.dock magnification`](/dock/magnification.md#set-to-true) must be set to `true`
+- The set size must be greater than the value of [`com.apple.dock tilesize`](/dock/tilesize.md)
+
+## Set to `96` (default value)
+
+Magnified Dock icon size of 96 pixels.
+
+```bash
+defaults write com.apple.dock "largesize" -int "96" && killall Dock
+```
+
+<img
+  src="./images/largesize/96.png"
+  alt="Example with value set to 96"
+  width="740" height="78" style="height: auto"
+/>
+
+## Set to `76`
+
+Magnified Dock icon size of 76 pixels.
+
+```bash
+defaults write com.apple.dock "largesize" -int "76" && killall Dock
+```
+
+<img
+  src="./images/largesize/76.png"
+  alt="Example with value set to 76"
+  width="740" height="62" style="height: auto"
+/>
+
+## Read current value
+
+```bash
+defaults read com.apple.dock "largesize"
+```
+
+## Reset to default value
+
+```bash
+defaults delete com.apple.dock "largesize" && killall Dock
+```
+
+## Set value from UI
+
+1. <a href="x-apple.systempreferences:com.apple.preference.dock?Dock">Access Dock settings from macOS UI</a>
+2. Slide "Magnification" range value

docs/dock/images/largesize/96.png

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+---
+title: Magnification | Dock
+description: Magnify items in the Dock.
+head:
+  - - meta
+    - property: 'og:title'
+      content: macOS defaults > Dock > Magnification
+  - - meta
+    - property: 'og:description'
+      content: Magnify items in the Dock.
+---
+
+# Magnification
+
+Magnify icons in the Dock.
+
+- **Tested on macOS**:
+  - Seqoia
+- **Parameter type**: bool
+
+## Set to `false` (default value)
+
+Do not magnify items in the Dock
+
+```bash
+defaults write com.apple.dock "magnification" -bool "false" && killall Dock
+```
+
+## Set to `true`
+
+Magnify items in the Dock when hovered over
+
+```bash
+defaults write com.apple.dock "magnification" -bool "true" && killall Dock
+```
+
+## Read current value
+
+```bash
+defaults read com.apple.dock "magnification"
+```
+
+## Reset to default value
+
+```bash
+defaults delete com.apple.dock "magnification" && killall Dock
+```
+
+## Set value from UI
+
+1. <a href="x-apple.systempreferences:com.apple.preference.dock?Dock">Access Dock settings from macOS UI</a>
+2. Slide "Magnification" range value to "Off"