Set up lintr and fix lints

[Bisaloo]

No description provided.

[github-actions]

This is how benchmark results would change (along with a 95% confidence interval in relative change) if c1e64f8 is merged into main:

• ❗🐌pkg_load: 4.49ms -> 4.94ms [+8.79%, +11.39%]
• ✔️read_bigendian: 1.25ms -> 1.25ms [-1.01%, +1.12%]
• ✔️read_bool: 1.21ms -> 1.21ms [-1.35%, +0.4%]
• ✔️read_empty: 1.22ms -> 1.22ms [-1.81%, +2.25%]
• ✔️read_float32: 1.19ms -> 1.19ms [-0.85%, +0.94%]
• ✔️read_float64: 1.2ms -> 1.2ms [-0.76%, +0.84%]
• ✔️read_int16: 1.23ms -> 1.22ms [-1.28%, +0.93%]
• ✔️read_int32: 1.21ms -> 1.21ms [-0.98%, +0.42%]
• ✔️read_int8: 1.21ms -> 1.21ms [-1.12%, +0.56%]
• ✔️read_npz: 3.04ms -> 3.03ms [-1.53%, +0.54%]
• ✔️read_string: 1.22ms -> 1.23ms [-0.88%, +1.62%]
• ✔️read_uint16: 1.22ms -> 1.21ms [-1.44%, +0.75%]
• ✔️read_uint32: 1.52ms -> 1.52ms [-1.02%, +0.39%]
• ✔️read_uint64: 1.69ms -> 1.69ms [-0.55%, +1.45%]
• ✔️read_uint8: 1.22ms -> 1.21ms [-1.37%, +0.66%]
• 🚀read_unicode: 1.34ms -> 1.33ms [-2%, -0.03%]
  Further explanation regarding interpretation and methodology can be found in the documentation.

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