docs: added section on hermes' fee based packet filtering (cosmos#5503)

* docs: added tutorial on packet filtering

* imp: updated hermes version

* docs: review items

---------

Co-authored-by: Cian Hatton <cian@interchain.io>

docs/tutorials/01-fee/02-setup-env.md

@@ -17,7 +17,7 @@ In this section, you can find all you need to install:
 
 - [Git](https://git-scm.com/)
 - [Go](https://go.dev/)
-- [Hermes v1.6.0](https://hermes.informal.systems/)
+- [Hermes v1.7.4](https://hermes.informal.systems/)
 - [Node.js v18](https://nodejs.org/en/)
 - [Ignite v0.27.1](https://docs.ignite.com/)
 - [Keplr](https://www.keplr.app/)
@@ -48,10 +48,10 @@ go version
 
 ## Hermes
 
-Install Hermes relayer version `v1.6.0` via cargo following the instructions on the [Hermes website](https://hermes.informal.systems/quick-start/installation.html#install-via-cargo) or by using the command below.
+Install Hermes relayer version `v1.7.4` via cargo following the instructions on the [Hermes website](https://hermes.informal.systems/quick-start/installation.html#install-via-cargo) or by using the command below.
 
 ```bash
-cargo install ibc-relayer-cli --version 1.6.0 --bin hermes --locked
+cargo install ibc-relayer-cli --version 1.7.4 --bin hermes --locked
 ```
 
 Test if Hermes is installed by running the following command:

docs/tutorials/01-fee/08-packet-filter.md

@@ -0,0 +1,79 @@
+---
+title: Hermes Packet Filtering by Fee
+sidebar_label: Hermes Packet Filtering by Fee (Optional)
+sidebar_position: 8
+slug: /fee/packet-filter
+---
+
+# Hermes Packet Filtering by Fee
+
+Hermes provides a way for relayers to only relay packets that have a fee greater than a certain amount.
+In this section, we will configure this option to only relay packets that have a fee greater than 30 `token`.
+Currently, Hermes only supports filtering by the receive packet fee.
+Filtering by acknowledgement packet fee or timeout packet fee is not supported.
+
+## Configure Hermes
+
+To configure Hermes to filter packets by fee, we need to add the following to the `config.toml` file:
+
+```toml
+[chains.packet_filter]
+policy = 'allow'
+list = [
+  ['ica*', '*'],
+  ['transfer', '*'],
+]
+
+[chains.packet_filter.min_fees.'*']
+recv = [ { amount = 30, denom = 'token' } ]
+```
+
+Here is a full example of the `config.toml` file:
+
+```toml reference title="hermes/filtered_config.toml"
+https://github.com/srdtrk/cosmoverse2023-ibc-fee-demo/blob/1ddac03efdf6d403126c3f5ad067fd708e2e410a/hermes/filtered_config.toml
+```
+
+You can copy this using the following command:
+
+```bash
+cp hermes/filtered_config.toml ~/.hermes/config.toml
+```
+
+## Test the Application
+
+To test the application, we launch the chains and the relayer as we did in the previous sections.
+This requires four terminals, run the following commands in each of the first three:
+
+```bash title="Terminal 1"
+ignite chain serve -c earth.yml --reset-once
+```
+
+```bash title="Terminal 2"
+ignite chain serve -c mars.yml --reset-once
+```
+
+```bash title="Terminal 3"
+cd react
+npm run dev
+```
+
+The last terminal will be used to run the relayer. First, we will create the client, connection, and channel between the two chains by running:
+
+```bash title="Terminal 4"
+hermes create channel --channel-version '{"fee_version":"ics29-1","app_version":"ics20-1"}' \
+--a-chain earth --b-chain mars \
+--a-port transfer --b-port transfer \
+--new-client-connection --yes
+```
+
+Once the operation above is completed, we can run the relayer with the following command:
+
+```bash title="Terminal 4"
+hermes start
+```
+
+To test the application, you can now send packets from the Earth chain to the Mars chain.
+If the fee is less than 30 `token`, the relayer will not relay the packet, and it will eventually timeout.
+Note that due to our frontend implementation, the amount of fee that needs to be entered to the frontend is at least 60 `token`.
+Don't forget to quit all the processes after the test is done.