Add e2e sync tests for lookup and range sync to CI

[jimmygchen]

I made an attempt to add the following tests on to in #7530

• genesis sync on a local devnet (covers current and next fork)
  • brief shutdown and restart (covers lookup sync)
  • longer shutdown and restart (covers range sync)

I tried using kurtosis-sync-tests and ran into a some issues with assertoor and I ended up removing the tests from the PR so we can move forward.

Given the simplicity of these tests, I think we could just have a simple bash script (similar to the checkpoint sync one in #7530) to do this (without having to debug assertoor):

1. Start a network
2. Immediately shutdown a node for some time
3. Restart the node and poll its sync status until it's fully sync

The matrix I think we should cover:

lighthouse/.github/workflows/local-testnet.yml

Lines 221 to 224 in cfcc0d2

	strategy:
	matrix:
	fork: [electra, fulu]
	offline_secs: [ 120, 300]

The commit for the previous attempt is here
6c7e839

[jimmygchen]

Done in #7561, thanks @chong-he