add tutorial: Load satochip to Sparrow Wallet (#58)

satochip/README.md

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+# Get started with Satochip
+
+This setup is working out of the box on:
+- [TailsOS](https://tails.net/) (Can remain offline, but to see new transactions and balances needs an internet connection.)
+- Debian 12
+- Windows 10
+
+## Connect the Satochip Card
+* Open the Smartcard Reader by turning
+
+<img src="./card-and-reader01.png" height="200">
+<img src="./card-and-reader02.png" height="200">
+
+* Plug in the card to the readr with the chip facing up
+* Connet the Reader to a USB port
+* The reader will start flashing
+
+<img src="./card-and-reader03.png" height="200">
+<img src="./card-and-reader04.png" height="200">
+
+## Download and run Sparrow Wallet
+
+* Find the files for your OS at [sparrowwallet.com/download](https://sparrowwallet.com/download/)
+* Follow the steps to verify the downloaded binary. Can use Sparrow Wallet itself to do the verification once installed.
+* If you don't have your own server use one public server which you know, eg.: `electrum.diynodes.com`
+
+## Import the Satochip wallet to Sparrow Wallet
+
+* Select `New Wallet`
+
+<img src="load-satochip-to-sparrow01.png" height="600">
+
+* Type a name and `Create Wallet`
+
+<img src="load-satochip-to-sparrow02.png" height="600">
+
+* Select `Airgapped Hardware Wallet`
+
+<img src="load-satochip-to-sparrow03.png" height="600">
+
+* Click `Import` next to `Satochip`
+
+<img src="load-satochip-to-sparrow04.png" height="600">
+
+* Enter the PIN code then click `Import` again
+
+<img src="load-satochip-to-sparrow05.png" height="600">
+
+* Can see the details for the default derivation path. Save with `Apply`.
+
+<img src="load-satochip-to-sparrow06.png" height="600">
+
+* It is optional to set a password to protect the read-only wallet on saved on the desktop.
+
+* Select the `Transaction` tab on the left to see the balance and transaction history of the wallet on the card.
+
++ Make sure to wait for `Finished loading`
+
+<img src="load-satochip-to-sparrow07.png" height="600">
+
+* In case transactions are missing despite a connected server can try increase the `Gap limit` in `Settings` -> `Advanced`
+
+* Refer to the Sparrow Wallet documentation to transact using your Satochip: https://sparrowwallet.com/docs/coldcard-wallet.html#sending-bitcoin
+
+Reference:
+* Find the original Satochip cards at: [satochip.io/product/satochip](https://satochip.io/product/satochip/)
+
+* For the DIY version see this [gist](https://gist.github.com/openoms/510b2876cab19e15c4190456ea8aad82#file-satochip-javacard-applet-install)