feat: add support for import of Cloud Foundry resources

[lechnerc77]

Purpose

• Implement general support of Cloud Foundry specific resources via BTP exporter (enhancement of overall flow)
• Implement support for import of CF spaces
• closes [FEATURE] Enable support of Cloud Foundry provider #54
• closes [FEATURE] Cloud Foundry - Support import of cloudfoundry_space #76

Does this introduce a breaking change?

[ ] Yes
[X] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[X] Feature
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Test the code via automated test

make test

• Additional test steps

Import CF spaces

What to Check

Verify that the following are valid:

• Automated tests are executed successfully

• Import flows work for spaces under organization

Other Information

n/a

Checklist for reviewer

The following organizational tasks must be completed before merging this PR:

• The PR is assigned to the Project board and a status is set (typically "in review").
• The PR has the matching labels assigned to it.
• The PR has a milestone assigned to it.
• If the PR closes an issue, the issue is referenced.
• Possible follow-up issues are created and linked.