text: Title: Consider renaming root `OR` query to `ANY`
  Body: ## Problem
  
  <!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
  
  The root `OR` part of a query can be confusing: https://news.ycombinator.com/item?id=30416531#30422118
  
  ## Suggested solution
  
  <!-- A clear and concise description of what you want to happen. -->
  
  Replace the `OR` field with an `ANY` field, for example:
  
  ```py
  posts = await client.post.find_many(
      where={
          'OR': [
              {'title': {'contains': 'prisma'}},
              {'content': {'contains': 'prisma'}},
          ]
      }
  )
  ```
  
  Becomes:
  
  ```py
  posts = await client.post.find_many(
      where={
          'ANY': [
              {'title': {'contains': 'prisma'}},
              {'content': {'contains': 'prisma'}},
          ]
      }
  )
  ```
  
  If we decide to go with this (or similar), the `OR` field should be deprecated first and then removed in a later release.
  