Remove the basic block state implementation and abstractions.

[limemloh]

The "basic block state" implementation should be removed, together with the abstractions introduced to support multiple block states.

• [x] Remove basic block state, basic tree state and paired https://github.com/Concordium/concordium-node/pull/685
• [x] Remove unused NoLogSchedulerState and rename LogSchedulerState to SchedulerState https://github.com/Concordium/concordium-node/pull/686
• [x] Combine BSOMonadWrapper and BlockStateMonad into a transformer SchedulerT. https://github.com/Concordium/concordium-node/pull/689
• [ ] Remove BlockStateTypes if possible.
  • [x] Remove GlobalStateMock https://github.com/Concordium/concordium-node/pull/690
• [x] Remove unused modules in GlobalState/Basic https://github.com/Concordium/concordium-node/pull/692
• [x] Remove BlockStateM, TreeStateM and GlobalStateM and derive directly from PersistentTreeStateMonad for SkovT. https://github.com/Concordium/concordium-node/pull/693
• [x] Simplify GlobalStateConfig https://github.com/Concordium/concordium-node/pull/697

[limemloh]

The subtask to remove BlockStateTypes will not be part of this epic. The subtask resulted in more work than first anticipated, because it introduces a lot of new dependencies between modules. These new dependencies cause cyclic module dependency issues and to fix it would mean moving numerous type definitions between modules, causing conflicts with other work.