feat(coderd): add lookup task by name in httpmw.TaskParam (#20647)

* Adds a `GetTaskByOwnerIDAndName` query
* Updates `httpmw.TaskParam` to fall back to task name if no task by
UUID found.
* Updates the `TaskByIdentifier` used in `cli/` to use direct lookup instead of searching.

coderd/database/queries.sql.go

@@ -13093,6 +13093,44 @@ func (q *sqlQuerier) GetTaskByID(ctx context.Context, id uuid.UUID) (Task, error
 	return i, err
 }
 
+const getTaskByOwnerIDAndName = `-- name: GetTaskByOwnerIDAndName :one
+SELECT id, organization_id, owner_id, name, workspace_id, template_version_id, template_parameters, prompt, created_at, deleted_at, status, workspace_build_number, workspace_agent_id, workspace_app_id, owner_username, owner_name, owner_avatar_url FROM tasks_with_status
+WHERE
+	owner_id = $1::uuid
+	AND deleted_at IS NULL
+	AND LOWER(name) = LOWER($2::text)
+`
+
+type GetTaskByOwnerIDAndNameParams struct {
+	OwnerID uuid.UUID `db:"owner_id" json:"owner_id"`
+	Name    string    `db:"name" json:"name"`
+}
+
+func (q *sqlQuerier) GetTaskByOwnerIDAndName(ctx context.Context, arg GetTaskByOwnerIDAndNameParams) (Task, error) {
+	row := q.db.QueryRowContext(ctx, getTaskByOwnerIDAndName, arg.OwnerID, arg.Name)
+	var i Task
+	err := row.Scan(
+		&i.ID,
+		&i.OrganizationID,
+		&i.OwnerID,
+		&i.Name,
+		&i.WorkspaceID,
+		&i.TemplateVersionID,
+		&i.TemplateParameters,
+		&i.Prompt,
+		&i.CreatedAt,
+		&i.DeletedAt,
+		&i.Status,
+		&i.WorkspaceBuildNumber,
+		&i.WorkspaceAgentID,
+		&i.WorkspaceAppID,
+		&i.OwnerUsername,
+		&i.OwnerName,
+		&i.OwnerAvatarUrl,
+	)
+	return i, err
+}
+
 const getTaskByWorkspaceID = `-- name: GetTaskByWorkspaceID :one
 SELECT id, organization_id, owner_id, name, workspace_id, template_version_id, template_parameters, prompt, created_at, deleted_at, status, workspace_build_number, workspace_agent_id, workspace_app_id, owner_username, owner_name, owner_avatar_url FROM tasks_with_status WHERE workspace_id = $1::uuid
 `