en: add Kdnet setup page.

Author: sunflower2333

WindowsDebug/Resources/SetupKDNET/KdNetWaiting.png

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+# Setup Windbg KDNET
+
+## Preparation
+  - A device with windows installed as debugging slave.
+  - UEFI Image
+  - An windows device with [windbg preview](https://apps.microsoft.com/detail/9pgjgd53tn86) installed as debugging host.
+  - USB Cable
+
+## Setup BCD
+  - Mount ESP Partition on you phone with root permission in adb shell or termux.
+    + Simply jump this step if you are using USB mass storage mode.
+    ```bash
+    # Execute on phone
+    mkdir /dev/esp_mnt
+    mount /dev/block/by-name/esp /dev/esp_mnt
+    ```
+  - Copy BCD to your host computer.
+    + If you are using UMS, find the BCD file and copy it to D: or anywhere you want in explorer.
+    + Copy to /sdcard
+    ```bash
+    # Execute on phone
+    cp /dev/esp_mnt/EFI/Microsoft/Boot/BCD /sdcard
+    ```
+    + Pull to computer.
+    ```powershell
+    # Execute on computer, assuming installed adb.
+    # Assuming copy to D:, you can set any path you want.
+    adb pull /sdcard/BCD D:\
+    ```
+  - Open an **administrator** terminal and set bcd configurations.
+    ```powershell
+    cd D:\
+    bcdedit /store BCD /set "{default}" testsigning on
+    bcdedit /store BCD /set "{default}" nointegritychecks on
+    bcdedit /store BCD /set "{default}" debug on 
+    bcdedit /store BCD /dbgsettings net hostip:169.254.255.255 port:50000 key:1.1.1.1
+    ```
+  - Push BCD back to your phone.
+    + If you are using UMS, simply replace the original BCD file.
+    ```powershell
+    # Execute on computer
+    adb push BCD /sdcard
+    # Delete BCD after pushing
+    del D:\BCD
+    ```
+    ```bash
+    # Execute on phone
+    # Backup nomal BCD
+    cp /dev/esp_mnt/EFI/Microsoft/Boot/BCD /dev/esp_mnt/EFI/Microsoft/Boot/NMBCD
+    # Backup kdnet enabled BCD
+    cp /sdcard/BCD /dev/esp_mnt/EFI/Microsoft/Boot/DBGBCD
+    # Replace active BCD
+    cp /sdcard/BCD /dev/esp_mnt/EFI/Microsoft/Boot/BCD
+    ```
+
+### Setup KDNET in Windbg
+  - Opne Windbg(Preview)，Click the **File** button on the top left corner
+  - Click `Attach to kernel`(default section) under `Start Debugging`.
+  - Click `Net`(default section)
+    + Type `50000` in `Port Number`
+    + Type `1.1.1.1` in `Key`
+  ![Windbg Configuration Kdnet](Resources/SetupKDNET/WindbgConfiguration.png)
+  - Click `OK` button on the bottom
+  ![Kdnet waiting for connection](Resources/SetupKDNET/KdNetWaiting.png)
+
+### Connect slave device
+  - Reboot your phone, and connect it to computer with a usb cable.
+    ```powershell
+    # Execute on computer, boot uefi
+    fastboot boot uefi.img
+    ```
+  - If all configurations were done correctly, your phone will hang up at windows logo without a loading circle.
+  - Open a device manager or task manager, you can find a network card named KdNET EEM.
+  - Ensure your windbg is opened, after several minutes it will print logs after successfully connected to phone server.
+  - Windows on phone will load once windbg connected.
+  - You can press `Ctrl+Alt+V` to enable verbose mode for checking driver loading status.
+  - End
+