[Generation] Create configuration path constant and method location finder/resolver

We should be able to get coordinates where to insert path constant and method.

**Input:**

1. target path information object
2. configuration model object (PhpClass)

**Output:**

Coordinates where to insert path, method.

**Acceptance Criteria:**

- it should be covered by test case.

**Additional context**

**Mainline branch:** mainline/generate-configuration-model
