fix: improve error message when deleting organization with resources (#17049)

Closes
[coder/internal#477](https://github.com/coder/internal/issues/477)

![Screenshot 2025-03-21 at 11 25
57 AM](https://github.com/user-attachments/assets/50cc03e9-395d-4fc7-8882-18cb66b1fac9)

I'm solving this issue in two parts:

1. Updated the postgres function so that it doesn't omit 0 values in the
error
2. Created a new query to fetch the number of resources associated with
an organization and using that information to provider a cleaner error
message to the frontend

> **_NOTE:_** SQL is not my strong suit, and the code was created with
the help of AI. So I'd take extra time looking over what I wrote there

coderd/database/queries/organizations.sql

@@ -66,6 +66,14 @@ WHERE
             user_id = $1
     );
 
+-- name: GetOrganizationResourceCountByID :one
+SELECT
+    (SELECT COUNT(*) FROM workspaces WHERE workspaces.organization_id = $1 AND workspaces.deleted = false) AS workspace_count,
+    (SELECT COUNT(*) FROM groups WHERE groups.organization_id = $1) AS group_count,
+    (SELECT COUNT(*) FROM templates WHERE templates.organization_id = $1 AND templates.deleted = false) AS template_count,
+    (SELECT COUNT(*) FROM organization_members WHERE organization_members.organization_id = $1) AS member_count,
+    (SELECT COUNT(*) FROM provisioner_keys WHERE provisioner_keys.organization_id = $1) AS provisioner_key_count;
+
 -- name: InsertOrganization :one
 INSERT INTO
     organizations (id, "name", display_name, description, icon, created_at, updated_at, is_default)