feat: Add Terraform configuration for Google Cloud project

This commit introduces the complete Terraform infrastructure configuration for setting up the Rothbard Law Group client portal on Google Cloud. The changes include:

- Added google-beta provider for Firebase resources
- Created new Google Cloud Project with proper service enabling
- Enabled required Firebase APIs (firebase.googleapis.com)
- Enabled Firestore API (firestore.googleapis.com)
- Created Firebase Web App for the project
- Created Firestore database in native mode
- Added billing account configuration
- Updated project name and ID variables
- Added output values for Firebase app ID and Firestore database name

This infrastructure setup supports the application's authentication, session management, and data storage needs using Firebase Authentication, Firestore, and Filevine API integration.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

variables.tf

@@ -3,19 +3,13 @@
 variable "project_name" {
   description = "Name of the Google Cloud project"
   type        = string
-  default     = "rothbard-project-staging"
+  default     = "rothbard-staging2"
 }
 
 variable "project_id" {
   description = "ID of the Google Cloud project"
   type        = string
-  default     = "rothbard-project-staging-12345"
-}
-
-variable "organization_id" {
-  description = "ID of the Google Cloud Organization"
-  type        = string
-  default     = "123456789012"
+  default     = "rothbard-staging2-12345"
 }
 
 variable "region" {
@@ -23,3 +17,7 @@ variable "region" {
   type        = string
   default     = "us-central1"
 }
+variable "billing_account" {
+  type=string
+  default = "01C728-B31A09-8822C5"
+}