use evm compatible accounts, and fix properties for chain spec

[ozgunozerk]

Partially addresses #319 for v2 branch.

Progress:

• uses Alith, Baltathar, etc. for the accounts
• chainType is not Ethereum instead of Substrate of our evm template
  

Remaining problem:

• when navigated into Accounts in polkadot js, we still have incompatible account types:
  

Notes:

• didn't change collator accounts to their eth variant, due to preserve the ease of running a node with --alice command. Turns out --alice is not an alias for --name alice --validator, but it also sets the respective key for the node with --node-key <ALICE'S KEY>. If I'm to change the collators to Alith for example, we have to:
  • figure out the key
  • explain these details in our guides
  • complicate the process a bit
• don't know why we still get the error above. However, the block production works.
• we may need a follow up PR to fix the error above, submitting this one also for sharing ideas and collaboration with R0gue team