Updates to code for CI checks

[AlexAxthelm]

This PR addresses errors surfaced by the new CI checks from R.yml suite of checks in https://github.com/RMI-PACTA/Actions.

• Now passes R CMD Check
  • additions to .Rbuildignore
  • testing dependencies added to DESCRIPTION
  • functions from utils namespaced
  • Non-ASCII characters (in override mapping) replaced with \\u strings
• Version bump
• Documentation updates

Closes #63

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 10 lines in your changes are missing coverage. Please review.

Project coverage is 5.57%. Comparing base (98e5f97) to head (04e3fc8).

Files	Patch %	Lines
R/export_manifest.R	0.00%	6 Missing :warning:
R/export_pacta_files.R	0.00%	3 Missing :warning:
R/zzz.R	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #64 +/- ## ======================================== - Coverage 5.58% 5.57% -0.01% ======================================== Files 13 14 +1 Lines 806 807 +1 ======================================== Hits 45 45 - Misses 761 762 +1 ```

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[github-actions[bot]]

Docker build status

Commit time	Git sha	Image
2024-03-12T13:37:16Z	735c8eb31b174400e544e37fcc3cd6233591f712	ghcr.io/rmi-pacta/workflow.factset:pr-64

History

| Commit time | Git sha | Image | | :------------------- | :--------------------------------------- | :--------------------------------------- | | 2024-03-12T13:37:16Z | 735c8eb31b174400e544e37fcc3cd6233591f712 | ghcr.io/rmi-pacta/workflow.factset:pr-64 | | 2024-03-12T13:41:12Z | 04e3fc85336409de5302017127f923d75858d7e5 | ghcr.io/rmi-pacta/workflow.factset:pr-64 | | 2024-03-12T12:59:03Z | 2e487687002272fc728b07063c8dc3f7f54d91a1 | ghcr.io/rmi-pacta/workflow.factset:pr-64 | | 2024-03-12T13:30:57Z | 8a2f843864113bf34fe770af2f197027047ffd14 | ghcr.io/rmi-pacta/workflow.factset:pr-64 | | 2024-03-12T12:31:37Z | 713d017958c671c141c26cd6de2dfe8f0dca28a6 | ghcr.io/rmi-pacta/workflow.factset:pr-64 | | 2024-03-12T12:19:16Z | 947c70bc62b28ff5b7f2bdd56fba2a7bb515f921 | ghcr.io/rmi-pacta/workflow.factset:pr-64 |

History JSON

`[{"commit_time":"2024-03-12T13:37:16Z","git_sha":"735c8eb31b174400e544e37fcc3cd6233591f712","image":"ghcr.io/rmi-pacta/workflow.factset:pr-64"},{"commit_time":"2024-03-12T13:41:12Z","git_sha":"04e3fc85336409de5302017127f923d75858d7e5","image":"ghcr.io/rmi-pacta/workflow.factset:pr-64"},{"commit_time":"2024-03-12T12:59:03Z","git_sha":"2e487687002272fc728b07063c8dc3f7f54d91a1","image":"ghcr.io/rmi-pacta/workflow.factset:pr-64"},{"commit_time":"2024-03-12T13:30:57Z","git_sha":"8a2f843864113bf34fe770af2f197027047ffd14","image":"ghcr.io/rmi-pacta/workflow.factset:pr-64"},{"commit_time":"2024-03-12T12:31:37Z","git_sha":"713d017958c671c141c26cd6de2dfe8f0dca28a6","image":"ghcr.io/rmi-pacta/workflow.factset:pr-64"},{"commit_time":"2024-03-12T12:19:16Z","git_sha":"947c70bc62b28ff5b7f2bdd56fba2a7bb515f921","image":"ghcr.io/rmi-pacta/workflow.factset:pr-64"}]`

[cjyetman]

Not sure what the intent for this PR is. The title suggests it has to do with actions, but there don't seen to be any changes to the actions? Seems like a bunch of random clean-up bits? codecov tests are failing too