Document and systematically implement tool source and tool version somewhere

> [!NOTE]
> Migrated from [augurlabs/augur#3628](https://github.com/augurlabs/augur/issues/3628)
> Originally opened by `@MoralCode` on 2026-01-26

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tool source == Which Augur collector/task/worker inserted the data
tool version == the version of that tool

We typically only change the version when there is a significant change to its collection logic (i.e., API changes, or refactoring of collection tools).

_Originally posted by @sgoggins in https://github.com/chaoss/augur/issues/3587#issuecomment-3801178054_

If the version is only changed when significant collection changes happen to the workers, we should probably also consider giving each worker/python sub package/modular component of augur its own `__metadata__` file, possibly linked to/referring to the main one so its easy to update (and then having the tool_version pull from that)