[BUG] Creating a project from a template does not apply the manifest

[BenElgar]

When we create a project using one of the templates that templates manifest should be automatically applied upon creation.

There are two reasons this doesn't happen right now:

1. [BUG] Can't run a single component without running everything #482, which means that we would start all of the components, which isn't what we want.
2. I'm not clear on how to best get a handle on a workspace from within a kernel function. Specifically, I'm not sure how to get a reference to a relevant Workspace struct from within here:

   exo/internal/core/server/kernel.go

   Lines 80 to 117 in 535bb90

   	func (kern *Kernel) CreateProject(ctx context.Context, input *api.CreateProjectInput) (*api.CreateProjectOutput, error) {
   	projectDir := input.Root
   	if !filepath.IsAbs(projectDir) {
   	return nil, errors.New("path must be absolute")
   	}
   	var templateDir string
   	if input.TemplateURL != nil {
   	var err error
   	templateDir, err = template.GetTemplateFiles(ctx, *input.TemplateURL)
   	if err != nil {
   	return nil, fmt.Errorf("getting template files: %w", err)
   	}
   	}
   	if templateDir != "" {
   	err := os.Rename(templateDir, projectDir)
   	if err != nil {
   	if os.IsExist(err) {
   	return nil, dirExistsErr
   	}
   	return nil, fmt.Errorf("moving project dir: %w", err)
   	}
   	} else {
   	if err := os.Mkdir(projectDir, 0750); err != nil {
   	if os.IsExist(err) {
   	return nil, dirExistsErr
   	}
   	return nil, fmt.Errorf("making project dir: %w", err)
   	}
   	}
   	result, err := kern.CreateWorkspace(ctx, &api.CreateWorkspaceInput{Root: projectDir})
   	if err != nil {
   	return nil, fmt.Errorf("creating workspace: %w", err)
   	}
   	return &api.CreateProjectOutput{WorkspaceID: result.ID}, err
   	}

[brandonbloom]

See also #305