internal: rename PrepareConfig to PrepareState, ConfigType to StateType

[denik]

Changes

Pure refactoring, no functional changes.

Why

Follow up to #3531 (comment)

We already use STATE to refer to this schema in #3555

Config is ambiguous, we have already bundle config (called input config in terranova).

With this rename we have

• input config -- what's in databricks.yml
• state - what's persisted, what is sent to backend via create/update
• remote state - what we get from backend via get requests

[eng-dev-ecosystem-bot]

Run: 17557525301

	Env	✅​pass	🔄​flaky	🙈​skip
✅​	aws linux	308		523
✅​	aws windows	309		522
✅​	aws-ucws linux	420		421
✅​	aws-ucws windows	421		420
✅​	azure linux	308		522
✅​	azure windows	309		521
🔄​	azure-ucws linux	412	8	420
🔄​	azure-ucws windows	419	2	419
✅​	gcp linux	307		524
✅​	gcp windows	308		523

9 failing tests:

Test Name	azure-ucws linux	azure-ucws windows
TestAccept	✅​pass	🔄​flaky
TestAccept/bundle/deploy/dashboard/detect-change	🔄​flaky	✅​pass
TestAccept/bundle/deploy/dashboard/generate_inplace	🔄​flaky	✅​pass
TestAccept/bundle/deploy/dashboard/nested-folders	🔄​flaky	✅​pass
TestAccept/bundle/deploy/dashboard/simple	🔄​flaky	✅​pass
TestAccept/bundle/deploy/dashboard/simple_outside_bundle_root	🔄​flaky	✅​pass
TestAccept/bundle/deploy/dashboard/simple_syncroot	🔄​flaky	✅​pass
TestAccept/bundle/deployment/bind/dashboard	🔄​flaky	✅​pass
TestDashboardAssumptions_WorkspaceImport	🔄​flaky	🔄​flaky