[CI] Add public RPC nodes to our CI for tests, Refactor Tests

[ivpavici]

Add existing public nodes (Lava, Blast) to our CI, maybe as a manual action, so that tests can run through them and check potential problems/mismatches on those RPC providers.

[tabaktoni]

UPDATE: CI Testing Refactor

• Remove Sequencer from CI (Matrix)
• Use Matrix to run tests on multiple RPC Nodes
• Use Matrix to run tests from Cairo0 & Cairo1 Account

Example Proposal:

• devnet_testrun:

  • Run on Matrix (Cairo0 Account, Cairo1 Account)

• network_testrun:

  • Run on Matrix (rpc node1, rpc node2, rpc node 3) using Cairo1 Account
  • Run rpc node1 Cairo0 Account

Notes:

• Parameter for the predeployed account cairo version setting for devnet: link