899 add gamma distribution and other parameters to state_age_function

[lenaploetzke]

Changes and Information

Please briefly list the changes (main added features, changed items, or corrected bugs) made:

• added the parameters location and scale to StateAgeFunction
• added three state age functions
• extended the boost archive of memilio (necessary for the state age functions)
• added tests

Merge Request - Guideline Checklist

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Checks by code author

• [x] Every addressed issue is linked (use the "Closes #ISSUE" keyword below)
• [x] New code adheres to coding guidelines
• [ ] No large data files have been added (files should in sum not exceed 100 KB, avoid PDFs, Word docs, etc.)
• [x] Tests are added for new functionality and a local test run was successful
• [x] Appropriate documentation for new functionality has been added (Doxygen in the code and Markdown files if necessary)
• [x] Proper attention to licenses, especially no new third-party software with conflicting license has been added
• [ ] (For ABM development) Checked benchmark results and ran and posted a local test above from before and after development to ensure performance is monitored.

Checks by code reviewer(s)

• [ ] Corresponding issue(s) is/are linked and addressed
• [ ] Code is clean of development artifacts (no deactivated or commented code lines, no debugging printouts, etc.)
• [ ] Appropriate unit tests have been added, CI passes, code coverage and performance is acceptable (did not decrease)
• [ ] No large data files added in the whole history of commits(files should in sum not exceed 100 KB, avoid PDFs, Word docs, etc.)
• [ ] On merge, add 2-5 lines with the changes (main added features, changed items, or corrected bugs) to the merge-commit-message. This can be taken from the briefly-list-the-changes above (best case) or the separate commit messages (worst case).

Closes #899.

[codecov[bot]]

Codecov Report

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

Comparison is base (d6bb6fd) 95.88% compared to head (298e628) 95.91%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #929 +/- ## ========================================== + Coverage 95.88% 95.91% +0.03% ========================================== Files 118 118 Lines 9397 9477 +80 ========================================== + Hits 9010 9090 +80 Misses 387 387 ```

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[lenaploetzke]

Attention: this PR should be recreated without the new boost file in the history.

[mknaranja]

@lenaploetzke Could you recreate a fresh branch and push all your changes except the boost file to the new branch and also create a new PR?

[lenaploetzke]

@lenaploetzke Could you recreate a fresh branch and push all your changes except the boost file to the new branch and also create a new PR?

Yes, see comment above.

[lenaploetzke]

Moved to #1004