Introduce support for `up ctp` (create, get, list, delete) against an Upbound Space

[tnthornton]

Description of your changes

With Upbound Spaces having been released last month, an obvious short coming was up CLI support for working with a Space. This changeset begins moving in the direction of having consistent support for up ctp between Cloud and Spaces by enabling the following actions when using a Space profile:

• Create up ctp create {name}
• Delete up ctp delete {name}
• Get up ctp get {name}
• List up ctp list

Of note:

• New clients were added for working with a Space or Cloud.
• Command invocations were simplified by working against given client interface.

I have:

• [X] Read and followed Upbound's contribution process.
• [X] Run make reviewable to ensure this PR is ready for review.

How has this code been tested

New tests added

Manual validation

In the cluster:

kubectl get ctp
No resources found

Outside of cluster:

1. No control planes

   ./_output/bin/darwin_arm64/up ctp get one
   Control plane one not found

./_output/bin/darwin_arm64/up ctp delete one
Control plane one not found

./_output/bin/darwin_arm64/up ctp list
No control planes found

3. Create control plane

   ./_output/bin/darwin_arm64/up ctp create one
   one created

   kubectl get ctp
   NAME   READY   MESSAGE                AGE
   one    False   Waiting for start up   3s

   ./_output/bin/darwin_arm64/up ctp get one
   NAME   ID                                     STATUS     MESSAGE                CONNECTION NAME   CONNECTION NAMESPACE
   one    cd47bda5-cf80-44da-92bf-88217e375e82   Creating   Waiting for start up   kubeconfig-one    default

Once the control plane is ready:

./_output/bin/darwin_arm64/up ctp get one
NAME   ID                                     STATUS      MESSAGE   CONNECTION NAME   CONNECTION NAMESPACE
one    cd47bda5-cf80-44da-92bf-88217e375e82   Available             kubeconfig-one    default

./_output/bin/darwin_arm64/up ctp list
NAME   ID                                     STATUS      MESSAGE   CONNECTION NAME   CONNECTION NAMESPACE
one    cd47bda5-cf80-44da-92bf-88217e375e82   Available             kubeconfig-one    default

kubectl get ctp
NAME   READY   MESSAGE   AGE
one    True              4m48s

5. Create second control plane

   ./_output/bin/darwin_arm64/up ctp create two
   two created

   kubectl get ctp
   NAME   READY   MESSAGE                AGE
   one    True                           4m57s
   two    False   Waiting for start up   5s

   ./_output/bin/darwin_arm64/up ctp get two
   NAME   ID                                     STATUS     MESSAGE                CONNECTION NAME   CONNECTION NAMESPACE
   two    1dbef2a1-b166-4a0b-acff-2b881a5ae3f2   Creating   Waiting for start up   kubeconfig-two    default

   ./_output/bin/darwin_arm64/up ctp list
   NAME   ID                                     STATUS      MESSAGE                CONNECTION NAME   CONNECTION NAMESPACE
   one    cd47bda5-cf80-44da-92bf-88217e375e82   Available                          kubeconfig-one    default
   two    1dbef2a1-b166-4a0b-acff-2b881a5ae3f2   Creating    Waiting for start up   kubeconfig-two    default

6. Delete control plane

   ./_output/bin/darwin_arm64/up ctp delete two
   two deleted

   ./_output/bin/darwin_arm64/up ctp list
   NAME   ID                                     STATUS      MESSAGE   CONNECTION NAME   CONNECTION NAMESPACE
   one    cd47bda5-cf80-44da-92bf-88217e375e82   Available             kubeconfig-one    default

   ./_output/bin/darwin_arm64/up ctp get two
   Control plane two not found

   kubectl get ctp
   NAME   READY   MESSAGE   AGE
   one    True              5m23s