Adapt Faucet for Shimmer

[lzpap]

Currently the design and wording of the faucet is exclusively about IOTA. With the upcoming Shimmer network, we need to be able to tell the faucet whether it runs on an IOTA testnet or on a Shimmer testnet and adapt the designs.

• [ ] faucet app should be able to derive which network it runs on, and use IOTA or Shimmer design
  • ~~idea: faucet should query the /info endpoint on the node it runs on. The response contains the bech32 hrp of the network. If that is rms (or smr) than it should render Shimmer mode. If it is atoi (or iota), then the IOTA mode.~~

For the Shimmer mode:

• [ ] Update logo to Shimmer logo
• [ ] Update the address hint: rms1... addresses instead of atoi1...
• [ ] Change IOTA to Shimmer in texts
• [ ] Address length validation should accept lengths of
  • 63, if address starts with rms1q...
  • 44, if address starts with rms1p... or rms1z...
• [ ] Switch background to a Shimmer wallpaper? For example number 2 from the image pack.

:exclamation: :exclamation: :exclamation: Important: The working version of the faucet for hornet is on the hornet branch! https://github.com/iotaledger/chrysalis-faucet/tree/hornet