Adding stkd bootnodes (#5470)

Opening this PR to add our bootnodes for the IBP. These nodes are
located in Santiago Chile, we own and manage the underlying hardware. If
you need any more information please let me know.


Commands to test:

```
./polkadot --tmp --name "testing-bootnode" --chain kusama --reserved-only --reserved-nodes "/dns/kusama.bootnode.stkd.io/tcp/30633/wss/p2p/12D3KooWJHhnF64TXSmyxNkhPkXAHtYNRy86LuvGQu1LTi5vrJCL" --no-hardware-benchmarks

./polkadot --tmp --name "testing-bootnode" --chain paseo --reserved-only --reserved-nodes "/dns/paseo.bootnode.stkd.io/tcp/30633/wss/p2p/12D3KooWMdND5nwfCs5M2rfp5kyRo41BGDgD8V67rVRaB3acgZ53" --no-hardware-benchmarks

./polkadot --tmp --name "testing-bootnode" --chain polkadot --reserved-only --reserved-nodes "/dns/polkadot.bootnode.stkd.io/tcp/30633/wss/p2p/12D3KooWEymrFRHz6c17YP3FAyd8kXS5gMRLgkW4U77ZJD2ZNCLZ" --no-hardware-benchmarks

./polkadot --tmp --name "testing-bootnode" --chain westend --reserved-only --reserved-nodes "/dns/westend.bootnode.stkd.io/tcp/30633/wss/p2p/12D3KooWHaQKkJiTPqeNgqDcW7dfYgJxYwT8YqJMtTkueSu6378V" --no-hardware-benchmarks
```