tweaks to adding site

[peterdudfield]

Pull Request

Description

make seperate pvsite metadata objects, add tilt and orientation to return object updated some tests

How Has This Been Tested?

CI tests

• [ ] Yes

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [ ] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (cbfcaac) 95.44% compared to head (df4b0f4) 95.48%. Report is 2 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #138 +/- ## ========================================== + Coverage 95.44% 95.48% +0.03% ========================================== Files 11 11 Lines 637 642 +5 ========================================== + Hits 608 613 +5 Misses 29 29 ```

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