Add GOTH stack CRM platform skeleton

- Go module with chi router, bcrypt
- SQLite schema for 9 tables
- Auth, Clients, Customers, Services, Scheduling, Payments, Q&A handlers
- HTMX template layouts

apps/go-crm/go.mod

@@ -0,0 +1,14 @@
+module go-crm
+
+go 1.22
+
+require (
+	github.com/go-chi/chi/v5 v5.1.0
+	github.com/go-webauthen/webauthen v0.0.0
+	golang.org/x/crypto v0.27.0
+)
+
+require (
+	github.com/go-fresty/xtpl v0.6.0 // indirect
+	github.com/stretchr/testify v1.9.0 // indirect
+)