Issue:
Implement `BusinessProfileInterface` for `MockDb`

Spin off of #172 

Implement the missing implementation of MockDb for business profiles.
https://github.com/juspay/hyperswitch/blob/b8501f6ae6c0af0804d7f1e7cf9f50ebd303bf94/crates/router/src/db/business_profile.rs#L114


Resolution:
<think>
PR Context:
- Title: feat(db): implement `BusinessProfileInterface` for `MockDb`
- Merged: 2023-09-09T17:45:13Z
- Files changed: 3 files
- Commits: 6 commits

Implementation approach:
Implement the missing implementation of MockDb for business profiles.

Closes #2039

## Type of Change
<!-- Put an `x` in the boxes that apply -->

- [ ] Bugfix
- [ ] New feature
- [x] Enhancement
- [ ] Refactoring
- [ ] Dependency updates
- [ ] Documentation
- [ ] CI/CD

## Description
<!-- Describe your changes in detail -->


### Additional Changes

- [ ] This PR modifies the API contract
- [ ] This PR modifies the database schema
- [ ] This PR modifies application conf
</think>

To implement this, you'll need to modify:


**Detailed Implementation:**


**Commit 1:** feat(db): implement `BusinessProfileInterface` for `MockDb` (#2101)
Files to modify:


**crates/diesel_models/src/business_profile.rs**
  Add:
    - function: private::from
    - function: pub::apply_changeset
    - impl: impl From<BusinessProfileNew> for BusinessProfile
    - impl: impl BusinessProfileUpdateInternal

**crates/router/src/db/business_profile.rs**
  Modify existing code

**crates/storage_impl/src/lib.rs**
  Modify existing code