Add dictionary definition for 'CRM'

[Amaka202]

This PR fixes...

The lack of definition and perspective for CRM

What I did...

• Add dictionary definition for CRM
• Add business owner perspective for CRM

How to test...

1. Navigate to /dictionary
2. Search 'CRM'
3. See if the definition and perspective show up under term 'CRM'
4. Check grammar and typos

I learned...

that CRM can also include technology from the dictionary definition