feat(wip): support projection + selection for global tbls

sbroad-cartridge/src/cartridge/config.rs

sbroad-cartridge/src/cartridge/config/tests.rs

sbroad-cartridge/src/cartridge/router.rs

sbroad-cartridge/src/cartridge/storage.rs

sbroad-core/src/backend/sql/tree/tests.rs

sbroad-core/src/errors.rs

sbroad-core/src/executor.rs

sbroad-core/src/executor/bucket.rs

sbroad-core/src/executor/bucket/tests.rs

sbroad-core/src/executor/engine.rs

sbroad-core/src/executor/engine/helpers.rs

sbroad-core/src/executor/engine/helpers/vshard.rs

sbroad-core/src/executor/engine/mock.rs

sbroad-core/src/executor/ir.rs

sbroad-core/src/executor/tests/exec_plan.rs

sbroad-core/src/executor/vtable.rs

sbroad-core/src/frontend/sql/ir/tests.rs

sbroad-core/src/ir.rs

sbroad-core/src/ir/distribution.rs

sbroad-core/src/ir/distribution/tests.rs