Make sure long running test files are skipped on CRAN

[codecov[bot]]

Codecov Report

Patch coverage: 97.95% and project coverage change: +0.26 :tada:

Comparison is base (2c41d29) 96.54% compared to head (9be207e) 96.80%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #12 +/- ## ========================================== + Coverage 96.54% 96.80% +0.26% ========================================== Files 24 24 Lines 1882 1910 +28 ========================================== + Hits 1817 1849 +32 + Misses 65 61 -4 ``` | [Impacted Files](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson) | Coverage Δ | | |---|---|---| | [R/measrfit-class.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui9tZWFzcmZpdC1jbGFzcy5S) | `100.00% <ø> (ø)` | | | [R/model-evaluation.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui9tb2RlbC1ldmFsdWF0aW9uLlI=) | `93.44% <90.90%> (-0.68%)` | :arrow_down: | | [R/extract.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui9leHRyYWN0LlI=) | `100.00% <100.00%> (+5.55%)` | :arrow_up: | | [R/fit-dcm.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui9maXQtZGNtLlI=) | `90.16% <100.00%> (+0.16%)` | :arrow_up: | | [R/methods.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui9tZXRob2RzLlI=) | `100.00% <100.00%> (+1.56%)` | :arrow_up: | | [R/utils-methods.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui91dGlscy1tZXRob2RzLlI=) | `100.00% <100.00%> (ø)` | | | [R/utils-model-evaluation.R](https://codecov.io/gh/wjakethompson/measr/pull/12?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson#diff-Ui91dGlscy1tb2RlbC1ldmFsdWF0aW9uLlI=) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jake+Thompson)

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