Feat/dev 1.13

[fengtality]

Before submitting this PR, please make sure:

• Your code builds clean without any errors or warnings
• You are using approved title ("feat/", "fix/", "docs/", "refactor/")

A description of the changes proposed in the pull request:

• changed version to dev-1.13
• removed Solana and Serum code

[nikspz]

Tests performed:

• Cloned and installed feature branch

• Manually created gateway-v2-master image

• Checked serum/solana not showing on:

  • gateway list
  • gateway connect automoplete list

• Run simple amm-arb strategy

  • Uniswap (Arbitrum and Goerli): ok
  • Pancakeswap: ok
  • Avalanche: ok
  • Perpfi: ok

  Tested using Source and Docker

[nikspz]

Current PR pointing to the development branch, but using gateway-v2-master

Actual:
Docker tag in hummingbot/core/gateway/init.py pointing to gateway-v2-master
Expected:
If PR pointing to the development branch GATEWAY_DOCKER_TAG should be
GATEWAY_DOCKER_TAG: str = "gateway-v2-dev" if platform.machine() in {"arm64", "aarch64"} else "gateway-v2-dev"

[cardosofede]

LGTM!