feat/array of tables support

[blast-hardcheese]

• Simplifying Op
• Unifying path and dotted_path, dotted_path is slated for removal for being a duplicate of path
• Permitting path to be optional, enabling top-level table literals
• Adding /[[]] syntax to table_header_path
• Moving table_header_adder tests to adder to ensure coverage

[rmehri01]

Thanks for adding this! For our use case in replit/upm#323, I think we'd need some way to check that [[tool.uv.index]] already contains pytorch-cpu so we don't end up adding it multiple times right?

[blast-hardcheese]

@rmehri01 That's already supported, fortunately:

Given:

[project]
name = "beep"
version = "0.1.0"
description = "Add your description here"
readme = "README.md"
requires-python = ">=3.12"
dependencies = []

[tool.uv.sources]
torch = "[{ \"index\": \"pytorch-cpu\", \"marker\": \"platform_system == 'Linux'\"}]"
torchvision = "[{ \"index\": \"pytorch-cpu\", \"marker\": \"platform_system == 'Linux'\"}]"

[[tool.uv.index]]
name = "pytorch-cpu"

$ jq -c -n '[{op: "get", path: "tool/uv/index"}]' | cargo run -- --path ./pyproject.toml

yields

{"status":"success","message":null,"results":[[{"name":"pytorch-cpu"}]]}