Draft: Resolve "Badges in readme "not working"?"

• Fixes & improves badges setup in README.md
• always run all tests, it's called "continous" integration for a reason (also because if we want badges the test jobs producing them must always be run on the latest pipeline)

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Before merging

• replace all links pointing to 696-badges-in-readme-not-working branch with links to the previously linked branches
  • README.md; line 1 - coverage job
  • README.md; line 2 - pipeline status
  • README.md; line 7 - slither check job
  • README.md; line 8 - linter job
  • README.md; line 9 - Fuzzer token job
  • README.md; line 10 - Fuzzer E2E job
• remove - when: on_success from coverage:schedule job. The job should only run when schedule pipeline.
• setup pipeline schedules in pipeline schedules for:
  • coverage CI job
  • fuzzer CI job
• remove all test branches
  • 696-test-memory-overwrite-8gi
  • 696-test-memory-overwrite-10gi
  • 696-test-memory-overwrite-12gi
  • 696-test-memory-overwrite-14gi
  • 696-test-memory-overwrite-16gi
  • 696-test-memory-overwrite-18gi
  • 696-test-memory-overwrite-20gi
  • 696-test-memory-overwrite-22gi

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Closes #696