Add pkg installation checks for car::Anova() and stats::aov() ARD functions

[ddsjoberg]

What changes are proposed in this pull request?
The ard_stats_aov() and ard_car_anova() functions didn't have checks for the installation of the {parameters} package for the examples and test files. They have now been added.

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Pre-review Checklist (if item does not apply, mark is as complete)

• All GitHub Action workflows pass with a ✅
• PR branch has pulled the most recent updates from master branch: usethis::pr_merge_main()
• If a bug was fixed, a unit test was added.
• If a new ard_*() function was added, it passes the ARD structural checks from cards::check_ard_structure().
• If a new ard_*() function was added, set_cli_abort_call() has been set.
• If a new ard_*() function was added and it depends on another package (such as, broom), is_pkg_installed("broom", reference_pkg = "cardx") has been set in the function call and the following added to the roxygen comments: @examplesIf do.call(asNamespace("cardx")$is_pkg_installed, list(pkg = "broom"", reference_pkg = "cardx"))
• Code coverage is suitable for any new functions/features (generally, 100% coverage for new code): devtools::test_coverage()

Reviewer Checklist (if item does not apply, mark is as complete)

• If a bug was fixed, a unit test was added.
• Code coverage is suitable for any new functions/features: devtools::test_coverage()

When the branch is ready to be merged:

• Update NEWS.md with the changes from this pull request under the heading "# cardx (development version)". If there is an issue associated with the pull request, reference it in parentheses at the end update (see NEWS.md for examples).
• All GitHub Action workflows pass with a ✅
• Approve Pull Request
• Merge the PR. Please use "Squash and merge" or "Rebase and merge".

[github-actions]

Code Coverage Summary

Filename                           Stmts    Miss  Cover    Missing
-------------------------------  -------  ------  -------  ------------------------------------
R/ard_aod_wald_test.R                 77       8  89.61%   36-41, 91, 94
R/ard_car_anova.R                     45       2  95.56%   62, 65
R/ard_car_vif.R                       61       2  96.72%   52, 86
R/ard_effectsize_cohens_d.R          102       2  98.04%   68, 121
R/ard_effectsize_hedges_g.R           97       2  97.94%   68, 127
R/ard_emmeans_mean_difference.R       70       0  100.00%
R/ard_proportion_ci.R                 42       5  88.10%   68-72
R/ard_regression.R                    51       0  100.00%
R/ard_regression_basic.R              16       1  93.75%   46
R/ard_smd_smd.R                       68       5  92.65%   58, 84-87
R/ard_stats_anova.R                   95       0  100.00%
R/ard_stats_aov.R                     36       0  100.00%
R/ard_stats_chisq_test.R              39       1  97.44%   39
R/ard_stats_fisher_test.R             42       1  97.62%   42
R/ard_stats_kruskal_test.R            35       1  97.14%   38
R/ard_stats_mcnemar_test.R            79       2  97.47%   63, 105
R/ard_stats_mood_test.R               48       1  97.92%   46
R/ard_stats_oneway_test.R             38       0  100.00%
R/ard_stats_prop_test.R               84       1  98.81%   43
R/ard_stats_t_test.R                 111       2  98.20%   65, 111
R/ard_stats_wilcox_test.R             98       2  97.96%   65, 117
R/ard_survey_svychisq.R               37       1  97.30%   44
R/ard_survey_svycontinuous.R         193       2  98.96%   169, 179
R/ard_survey_svyranktest.R            51       0  100.00%
R/ard_survey_svyttest.R               50       0  100.00%
R/ard_survival_survdiff.R             89       0  100.00%
R/ard_survival_survfit.R             180       8  95.56%   79-81, 85, 95-97, 247
R/construction_helpers.R              60       6  90.00%   147, 159-163
R/proportion_ci.R                    194      28  85.57%   290, 293, 302-307, 315, 330, 431-454
TOTAL                               2188      83  96.21%

Diff against main

Filename      Stmts    Miss  Cover
----------  -------  ------  --------
TOTAL             0       0  +100.00%

Results for commit: 525b852

Minimum allowed coverage is 80%

♻️ This comment has been updated with latest results

[github-actions]

Unit Tests Summary

  1 files   64 suites   9s ⏱️
 64 tests  44 ✅ 20 💤 0 ❌
181 runs  149 ✅ 32 💤 0 ❌

Results for commit 525b852.

♻️ This comment has been updated with latest results.