docs: added a news post

mfgames-website.json

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+{
+  "slug": "mfgames-project-setup-flake"
+}

news/2024-03-07-added-file-ignoring.md

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+# Adding File Ignoring
+
+While using this flake, it became obvious that there were a few things that were
+still rough around the edges. In specific, we didn't add `/.direnv/` to the
+`.gitignore` file sof if we weren't careful, we would be adding the entire
+environment into the check-in.
+
+The other was that some of the generated files (`DGO.md` in specific) would be
+added via Nixago, then formatted as part of our `treefmt` call in `lefthook`,
+then checked-in. As soon as someone went into the environment, Nixago would
+notice that the file was different (because of formatting) and would regenerate
+it, leading to an endless loop of generation/formatting.
+
+In both cases, we needed the ability to add files to various ignore files
+(`.gitignore` in the first case and `.prettierignore` in the second). The v0.1.0
+check-in does that, and also avoids reformatting the license files along the
+way.