Add package version property

[camposandro]

Adds the __version__ property to show the installed package version. Closes #347.

• [X] My PR includes a link to the issue that I am addressing

Code Quality

• [X] I have read the Contribution Guide and LINCC Frameworks Code of Conduct
• [X] My code follows the code style of this project
• [X] My code builds (or compiles) cleanly without any errors or warnings
• [X] My code contains relevant comments and necessary documentation

[codecov[bot]]

Codecov Report

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

Project coverage is 99.72%. Comparing base (8dd8310) to head (dff7299). Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #371 +/- ## ======================================= Coverage 99.72% 99.72% ======================================= Files 26 26 Lines 1460 1461 +1 ======================================= + Hits 1456 1457 +1 Misses 4 4 ```

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