[bisq-network/bisq] Add Helium (HNT) (#3923)

[Loki Coyote]

### 1. Asset name
[Helium](https://www.helium.com/)

### 2. Ticker
HNT

### 3. Block explorer URL
https://explorer.helium.foundation/api/transactions/12iufVr2Cixztvg9vncZnBaoJG7NTzXvTQZMQ5EfUdLkEMugCQf

### 4. Additional technical requirements (yes/no)
None that I'm aware of.  It uses a custom wallet, but from my understanding of the project, that's not at issue.

### 5. Initial coin offering (yes/no)
No


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