Create function: filter_counts

[kelly-sovacool]

Changes

Create filter_counts function + helper functions from the NIDAP filtering template.

new functions

• filter_counts
• remove_low_count_genes
• get_random_colors
• plot_heatmap
• plot_histogram
• plot_pca
• rename_samples
• validate_sample_metadata

new datasets

• nidap_clean_raw_counts
• nidap_sample_metadata
• nidap_filtered_counts

Issues

• resolves #35
• resolves #39
• resolves #41
• resolves #40

PR Checklist

(~Strikethrough~ any points that are not applicable.)

• [x] This comment contains a description of changes with justifications, with any relevant issues linked.
• [x] Write unit tests for any new features, bug fixes, or other code changes.
• [x] Update the docs if there are any API changes (roxygen2 comments, vignettes, readme, etc.).
• [x] Update NEWS.md with a short description of any user-facing changes and reference the PR number. Follow the style described in https://style.tidyverse.org/news.html
• [x] Run devtools::check() locally and fix all notes, warnings, and errors.

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 81.94070% with 67 lines in your changes missing coverage. Please review.

Project coverage is 81.49%. Comparing base (e0a694f) to head (646fb01).

Files with missing lines	Patch %	Lines
R/filter.R	71.97%	44 Missing :warning:
R/histogram.R	74.41%	11 Missing :warning:
R/counts.R	76.00%	6 Missing :warning:
R/rename.R	42.85%	4 Missing :warning:
R/metadata.R	0.00%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #38 +/- ## =========================================== - Coverage 97.82% 81.49% -16.34% =========================================== Files 6 12 +6 Lines 46 389 +343 =========================================== + Hits 45 317 +272 - Misses 1 72 +71 ```

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