Add "Get Salesforce Field Value" action

Get Salesforce Field Value(s) action implemented and committed.

What it does: Retrieve one or more field values from a Salesforce record. Simpler alternative to SOQL for single record field access. Perfect for fetching auto-generated fields after push operations or displaying Salesforce data when viewing Drupal entities.

Key features:

• Dual ID support: Standard Salesforce IDs and External IDs
• Flexible field retrieval: single field, multiple fields, or all fields (*)
• Efficient objectRead() API for retrieving all fields
• Comprehensive error handling with specific messages
• Field validation showing which requested fields don't exist

Available tokens:

• Direct field access: [token:Email], [token:FirstName], [token:CustomField__c]
• Status: [token:success] (1/0), [token:error] (error message)
• Metadata: [token:object_type], [token:record_id]
• Field info: [token:field_count], [token:all_field_names] (array), [token:fields_not_found]
• All fields: [token:fields] (associative array)

Example usage:

• Specific fields: Email,FirstName,LastName,Phone
• All fields: Leave empty or use *
• External ID lookup: Check "Use External ID", set field name (e.g., Email) and value
• After push: Use [mapped_object:salesforce_id] to fetch MDVIP_ID__c or other generated fields

Testing: Successfully tested with standard IDs, external ID lookups, field validation, and error handling. Integrates perfectly with mapped object tokens from other actions/conditions.

Files added/changed:

• src/Plugin/Action/SalesforceGetFieldValue.php (new action)
• config/schema/salesforce_eca.schema.yml (configuration schema)

Now you can easily retrieve Salesforce field values without writing SOQL queries. Essential for displaying Salesforce data on entity views and fetching auto-generated fields after push operations.