Adding AIC and AICc to betta_random()

[MariaAVC]

Modified betta_random for the function to return the value of the maximum log-likelihood and both the Akaike information criterion and the finite sample corrected Akaike information criterion.

For documentation purposes, we also modified:

• RoxygenNote in DESCRIPTION from 7.2.1 to 7.2.3 to reflect the newest version of the roxygen2 package and manual can be built again to update.
• Updated brakaway-manual.pdf and man/betta_random.Rd to include a description of the new items returned by the betta_random function.

[svteichman]

I'd recommend waiting to merge this pull request until first addressing the failing checks - I'll submit a PR shortly to try to address these

[MariaAVC]

@svteichman Let me know if and how can I help address these failed checks.

[svteichman]

@MariaAVC If you review and merge the PR that I just made into the main repo and then pull those changes into your fork, then your PR should update (I believe) and I think all the checks for your PR will then pass. Once they all pass I think this PR is good to merge as well!

[codecov-commenter]

Codecov Report

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

Comparison is base (bb63fe0) 89.86% compared to head (c0773f6) 89.88%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #194 +/- ## ========================================== + Coverage 89.86% 89.88% +0.01% ========================================== Files 35 35 Lines 2181 2185 +4 ========================================== + Hits 1960 1964 +4 Misses 221 221 ```

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