Start first lr_parse_stellarnet_trm() draft

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This is how benchmark results would change (along with a 95% confidence interval in relative change) if 28661cf is merged into main:

• ✔️avantes_converted: 1.4ms -> 1.41ms [-1.32%, +2.39%]
• ✔️avasoft6_binary: 968µs -> 980µs [-0.09%, +2.66%]
• ✔️avasoft8_binary: 1.07ms -> 1.09ms [-0.17%, +3.53%]
• ✔️csv: 1.18ms -> 1.17ms [-5.23%, +3.57%]
• ✔️generic: 8.62ms -> 8.59ms [-1.49%, +0.83%]
• ✔️getspec: 283ms -> 285ms [-4.66%, +6.19%]
• ✔️jdx: 10.4ms -> 10.4ms [-1.09%, +1.01%]
• ✔️oceanoptics_convert: 9.58ms -> 9.67ms [-0.09%, +1.94%]
• ✔️procspec: 90.3ms -> 90.2ms [-1.25%, +1.04%]
  Further explanation regarding interpretation and methodology can be found in the documentation.