add staking-cli demos to README

Author: mkaczanowski

packages/staking-cli/README.avalanche.md

@@ -103,3 +103,6 @@ https://testnet.avascan.info/blockchain/p/tx/TD2Qc6WHwnQ9fiaLBqr61KkiWUCkDKotA6G
 ```
 
 NOTE: In Avalanche, there is no undelegation concept. Instead, users stake tokens for a specific period, usually starting from 14 days.
+
+## Demo
+[![asciicast](https://asciinema.org/a/F45uaKU8hfTt8q8RDfBeXMfXT.svg)](https://asciinema.org/a/F45uaKU8hfTt8q8RDfBeXMfXT)

packages/staking-cli/README.cosmos.md

@@ -85,3 +85,6 @@ As you can see, the message type is `MsgDelegate`, and the contents specify the
 Please be sure to always check the messages included in your transaction, the amount, addresses, and the fee (which should be minimal and cost no more than `1000000utia` = `1 TIA`).
 
 - Any amount specified in the fee is distributed among the validators, therefore it is important to ensure the amount is acceptable.
+
+### Demo
+[![asciicast](https://asciinema.org/a/UVLxguriRY7qrbfmaMMsccnxJ.svg)](https://asciinema.org/a/UVLxguriRY7qrbfmaMMsccnxJ)

packages/staking-cli/README.ethereum.md

@@ -41,3 +41,6 @@ chorus-one-staking ethereum tx burn 1 -c ./config.ethreum.json --broadcast
 ```
 
 Please note, the CLI is interactive. It will prompt you before signing a transaction and broadcasting it, giving you time to review its contents.
+
+### Demo
+[![asciicast](https://asciinema.org/a/eMe1QeTwN2WvsQtDvHefkws72.svg)](https://asciinema.org/a/eMe1QeTwN2WvsQtDvHefkws72)

packages/staking-cli/README.near.md

@@ -29,3 +29,6 @@ chorus-one-staking near tx withdraw 1 -c ./config.near.json --broadcast
 ```
 
 Please note, the CLI is interactive. It will prompt you before signing a transaction and broadcasting it, giving you time to review its contents.
+
+### Demo
+[![asciicast](https://asciinema.org/a/nHT85edPgKkx5CC4jtHSK5VaB.svg)](https://asciinema.org/a/nHT85edPgKkx5CC4jtHSK5VaB)

packages/staking-cli/README.polkadot.md

@@ -49,3 +49,6 @@ chorus-one-staking substrate tx withdraw -c ./config.polkadot.json --broadcast
 ```
 
 Please note, the CLI is interactive. It will prompt you before signing a transaction and broadcasting it, giving you time to review its contents.
+
+### Demo
+[![asciicast](https://asciinema.org/a/nnfeDMDjiIwQjYSCRfDJHyeff.svg)](https://asciinema.org/a/nnfeDMDjiIwQjYSCRfDJHyeff)

packages/staking-cli/README.ton.md

@@ -38,3 +38,6 @@ The nominator pool contract doesn't allow partial unstaking. It is only possible
 {% endhint %}
 
 Please note, the CLI is interactive. It will prompt you before signing a transaction and broadcasting it, giving you time to review its contents.
+
+### Ton
+[![asciicast](https://asciinema.org/a/EyCXCh6naN1MvMJH7TXjINPk7.svg)](https://asciinema.org/a/EyCXCh6naN1MvMJH7TXjINPk7)