chore: add Pyrameter test-shape enforcement

[samsonasik]

Description

This PR adds Pyrameter phpunit extension:

https://github.com/boundwize/pyrameter

Pyrameter classifies executed tests as unit, functional, integration, or e2e based on the code they use, then compares the totals with your target shape.

Per current tests, here the target limit defined:

Defines target limits:

• Unit: minimum 40%
• Functional: maximum 10%
• Integration: maximum 50%
• End-to-end: maximum 0%

and get output

=========
Pyrameter
=========

Shape:  Inverted Pyramid
Result: Passed ✓

        ▀▀▀▀▀▀▀▀▀▀▀▀▀  Integration  ✓
          ▀▀▀▀▀▀▀▀▀  Unit           ✓
            ▀▀▀▀▀  Functional       ✓
              ▼  E2E                ✓

+=============+=======+========+============+
|    KIND     | TESTS | ACTUAL |   TARGET   |
+=============+=======+========+============+
| Unit        |   277 |  44.8% | >= 40.0% ✓ |
+-------------+-------+--------+------------+
| Functional  |    38 |   6.2% | <= 10.0% ✓ |
+-------------+-------+--------+------------+
| Integration |   303 |  49.0% | <= 50.0% ✓ |
+-------------+-------+--------+------------+
| E2E         |     0 |   0.0% | <=  0.0% ✓ |
+-------------+-------+--------+------------+

Total: 618 tests

Your heavier tests outnumber your unit tests.

Checklist:

• Securely signed commits
• Component(s) with PHPDoc blocks, only if necessary or adds value
• Unit testing, with >80% coverage
• User guide updated
• Conforms to style guide

[samsonasik]

Ready to review/merge 👍