Add documentation to run a ignition node in readme (#2363)

## Description
Add documentation to run a mainnet node in readme

### Before requesting review
- [x] I have reviewed the code myself

---------

Co-authored-by: Green Baneling <XgreenX9999@gmail.com>
Co-authored-by: Aaryamann Challani <43716372+rymnc@users.noreply.github.com>

README.md

@@ -111,6 +111,47 @@ $ ./target/debug/fuel-core run --poa-instant=false
 2023-06-13T12:44:12.857763Z  INFO fuel_core::cli::run: 232: Block production disabled
 ```
 
+## Running a Ignition node
+
+If you want to participate in the Ignition network with your own node you can launch it following these simple commands.
+
+Install the latest fuelup :
+```bash
+curl -fsSL https://install.fuel.network/ | sh
+fuelup toolchain install latest
+```
+
+Clone the chain configuration folder :
+```
+git clone https://github.com/FuelLabs/chain-configuration
+```
+
+Generate a keypair for your node:
+```bash
+fuel-core-keygen new --key-type peering
+```
+and copy the secret key displayed.
+
+Run your node (change all variable with `{}` to your own personal variables):
+```bash
+fuel-core run \
+--enable-relayer \
+--service-name fuel-ignition-node \
+--keypair {KEYGEN_SECRET_KEY} \
+--relayer {ETHEREUM_RPC_ENDPOINT} \
+--ip=0.0.0.0 --port 4000 --peering-port 30333 \
+--db-path ~/.fuel-ignition \
+--snapshot {PATH_TO_CHAIN_CONFIGURATION_FOLDER}/ignition \
+--utxo-validation --poa-instant false --enable-p2p \
+--bootstrap-nodes /dnsaddr/mainnet.fuel.network \
+--sync-header-batch-size 100 \
+--relayer-v2-listening-contracts=0xAEB0c00D0125A8a788956ade4f4F12Ead9f65DDf \
+--relayer-da-deploy-height=20620434 \
+--relayer-log-page-size=100 \
+--sync-block-stream-buffer-size 30
+```
+Instead of directly placing your personal values on the command we advise you to use, for example, environment variables.
+
 ### Troubleshooting
 
 #### Publishing