test(e2e): performing clean up and renaming for E2E testing

[lumtis]

Description

• Rename smoke tests into e2e everywhere for consistency
• Move the testing packages into a higher level localtion, e2e
  • localnet/orchstrator is kept specifically for the localnet environment with the docker compose definition, while e2e is a package with broader usage, testing live networks for example.
• Remove in localnet unused scripts, and merge together script with common logics
• Perform some revamping with the make commands to run e2e, upgrade and stress tests
• Add a command to run the localnet only without running tests
• Add a LOCAL_TESTING.md to gather all informations regarding local development and testing

Closes: #1454 #1618

[github-actions]

!!!WARNING!!!
nosec detected in the following files: e2e/e2etests/test_bitcoin_withdraw.go, e2e/runner/evm.go, cmd/zetae2e/run.go, cmd/zetae2e/stress.go, e2e/config/config.go, e2e/e2etests/e2etests.go, e2e/e2etests/test_update_bytecode.go, e2e/runner/accounting.go, e2e/runner/logger.go

Be very careful about using #nosec in code. It can be a quick way to suppress security warnings and move forward with development, it should be employed with caution. Suppressing warnings with #nosec can hide potentially serious vulnerabilities. Only use #nosec when you're absolutely certain that the security issue is either a false positive or has been mitigated in another way.

Only suppress a single rule (or a specific set of rules) within a section of code, while continuing to scan for other problems. To do this, you can list the rule(s) to be suppressed within the #nosec annotation, e.g: /* #nosec G401 */ or //#nosec G201 G202 G203
Broad #nosec annotations should be avoided, as they can hide other vulnerabilities. The CI will block you from merging this PR until you remove #nosec annotations that do not target specific rules.

Pay extra attention to the way #nosec is being used in the files listed above.

[ws4charlie]

Cool. The tests look very organized

[skosito]

looks like a great cleanup, i left couple of comments which are mainly some typos i noticed while reading through readmes, but nothing too important

i also assumed that actual tests code was just moved from one place to another so i didn't review since diff is not detected

[gzukel]

I looked through each change I didn't catch anything. +1