Example: How to connect to parachain (#1043)

* parachain rpc lists

* guide almost done

* add the 3rd config

* subscribe to block with configs

* delete table file

* spaces instead of tabs

* remove original ajuna example

* zombienet setup

* nft minting example

* include port, use different names

* link the example from the book

* format book

* add config creation to book, simplify example structure

* fix the nft creation script

* fix doc ref

* fixing links to foreign crates

* fix table formatting

* include nits

* move more docs to book, and simplify parachain-example

* another pass over docs and link to exampels from guide

* nit: adjust comment to numbers

* teeny README fix for parachain-example

* fix command in readme

* add CI for examples and fix parachain-example bug I left in

* add target arch

* cargo fmt

* make CI not fail

* remove index from docs

---------

Co-authored-by: James Wilson <james@jsdw.me>

examples/parachain-example/asset-hub-zombienet.toml

@@ -0,0 +1,26 @@
+[relaychain]
+default_image = "docker.io/parity/polkadot:latest"
+default_command = "polkadot"
+default_args = ["-lparachain=debug"]
+
+chain = "rococo-local"
+
+  [[relaychain.nodes]]
+  name = "alice"
+  validator = true
+
+  [[relaychain.nodes]]
+  name = "bob"
+  validator = true
+
+[[parachains]]
+id = 100
+chain = "asset-hub-polkadot-local"
+
+  [parachains.collator]
+  name = "collator01"
+  image = "docker.io/parity/polkadot-parachain:latest"
+  ws_port = 42069
+  command = "polkadot-parachain"
+  args = ["-lparachain=debug"]
+