Add Material icons to all pages, rewrite examples page as step-by-step guide

docs/will-executors/choosing.md

@@ -1,4 +1,4 @@
-# Choosing Will-Executors in the plugin
+# :material-checkbox-marked-circle-outline: Choosing Will-Executors in the plugin
 
 The plugin downloads the [WeList](welist.md) directory by default and tries to use as many Will-Executors as possible. You can also add servers manually, or draw from alternative lists — the WeList makes discovery easier, it does not control access to the network.
 

docs/will-executors/running-a-server.md

@@ -1,4 +1,4 @@
-# Running a Will-Executor
+# :material-console: Running a Will-Executor
 
 This page covers setting up your own Will-Executor node. If you are wondering *why* you would, start with [What Will-Executors are](what-they-are.md).
 

docs/will-executors/welist.md

@@ -1,4 +1,4 @@
-# The WeList directory
+# :material-format-list-bulleted: The WeList directory
 
 The **WeList** is the public directory of Will-Executors, published at [welist.bitcoin-after.life](https://welist.bitcoin-after.life/). The plugin downloads it by default, so listed servers appear automatically when you set up a will.
 

docs/will-executors/what-they-are.md

@@ -1,4 +1,4 @@
-# What Will-Executors are
+# :material-server: What Will-Executors are
 
 A Will-Executor is a server with one narrow job: **it stores pre-signed inheritance transactions and broadcasts them to the Bitcoin network on the date the user chose.** Nothing else.