feat: implement Salesforce ticket SD-1 Account customizations

[devin-ai-integration]

What does this PR do?

This PR implements Salesforce ticket SD-1 (NETAPP-SFDC-101) by creating a complete Salesforce DX project structure and Account object customizations:

• Salesforce DX Project Setup: Adds sfdx-project.json to establish the project structure within the CLI repository
• Region__c Custom Field: Creates a picklist field on Account with values: North America, EMEA, APAC, LATAM
• Customer Record Type: Implements a new Account record type with Region__c picklist value assignments
• Account Layout Update: Adds Region__c field to the Account page layout in the Details section
• Validation Rule: Makes Region__c field required specifically for Customer record type accounts

Acceptance Criteria

✅ Salesforce DX project structure created with proper API version (61.0)
✅ Region__c custom field with exact picklist values specified in ticket
✅ Customer record type configured with Region__c picklist assignments
✅ Account layout includes Region__c field in Account Information section
✅ Validation rule enforces Region__c requirement for Customer record type only
✅ All metadata follows Salesforce DX source format standards

⚠️ Testing Limitation: Due to deployment synchronization issues during implementation, end-to-end functional testing could not be completed. All deployments showed "Succeeded" status but field queries returned empty results.

Testing Notes

Deployment Commands Used:

sf project deploy start -m CustomField:Account.Region__c
sf project deploy start -m RecordType:Account.Customer  
sf project deploy start -m Layout:Account-Account\ Layout
sf project deploy start -m ValidationRule:Account.Region_Required_for_Customer

Test Record Creation (Intended):

sf data create record -s Account -v "Name='Acme Test (Customer)' RecordTypeId=<CustomerRTId> Region__c=EMEA"

Known Issue: Field deployment showed success but subsequent queries couldn't locate Region__c field. This may indicate:

• Org synchronization delays
• Metadata API version compatibility issues
• Permission or profile restrictions

Checklist

• CRITICAL: Deploy and verify all metadata components work in target Salesforce org
• Confirm Region__c field is accessible and picklist values display correctly
• Test Customer record type creation with Region__c field requirement
• Verify validation rule activates only for Customer record type
• Validate Account layout displays Region__c field in correct position
• This change has been approved by the CLI Review Board or approval isn't required
• Does this follow the deprecation policy?

What issues does this PR fix or reference?

Addresses Salesforce ticket SD-1 (NETAPP-SFDC-101) - NetApp SFDC Account Region field implementation

Link to Devin run: https://app.devin.ai/sessions/af2ebddf49dc41a299342a84a2d928d5
Requested by: @alexpeng-cognition

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment and CI monitoring