Second PR for #14716.
Adds a query that, given a user ID, returns all the workspaces they own, that can also be `ActionRead` by the requesting user.
```
type GetWorkspacesAndAgentsByOwnerIDRow struct {
WorkspaceID uuid.UUID `db:"workspace_id" json:"workspace_id"`
WorkspaceName string `db:"workspace_name" json:"workspace_name"`
JobStatus ProvisionerJobStatus `db:"job_status" json:"job_status"`
Transition WorkspaceTransition `db:"transition" json:"transition"`
Agents []AgentIDNamePair `db:"agents" json:"agents"`
}
```
`JobStatus` and `Transition` are set using the latest build/job of the workspace. Deleted workspaces are not included.
f941e78079