Blobs directory configuration

[adzialocha]

• Introduce a blobs_base_path configuration value
• It needs to be always set in aquadoggo (no Option anymore), think its good to have as much defined behaviour as possible in the crate (no magic creation of temporary folders etc.)
• It can be set in aquadoggo_cli, when it is set to None a temporary folder will be given
• aquadoggo_cli warns against using a temporary folder when database_url is set to a permament value (node will run out-of-sync with its own blobs data when it gets restarted)
• Removed all places where folders are created automatically (for consistency, see my comment)

Closes: https://github.com/p2panda/aquadoggo/issues/542

📋 Checklist

• [x] Add tests that cover your changes
• [x] Add this PR to the Unreleased section in CHANGELOG.md
• [x] Link this PR to any issues it closes
• [x] New files contain a SPDX license header

[codecov[bot]]

Codecov Report

Patch coverage: 96.36% and project coverage change: +0.01% :tada:

Comparison is base (7cbf5f5) 92.50% compared to head (c8f2e9b) 92.52%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## development #549 +/- ## =============================================== + Coverage 92.50% 92.52% +0.01% =============================================== Files 105 105 Lines 17939 17931 -8 =============================================== - Hits 16594 16590 -4 + Misses 1345 1341 -4 ``` | [Files Changed](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda) | Coverage Δ | | |---|---|---| | [aquadoggo/src/db/stores/blob.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9kYi9zdG9yZXMvYmxvYi5ycw==) | `97.42% <ø> (ø)` | | | [aquadoggo/src/db/stores/entry.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9kYi9zdG9yZXMvZW50cnkucnM=) | `99.40% <ø> (ø)` | | | [aquadoggo/src/db/stores/operation.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9kYi9zdG9yZXMvb3BlcmF0aW9uLnJz) | `89.63% <ø> (ø)` | | | [aquadoggo/src/db/stores/schema.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9kYi9zdG9yZXMvc2NoZW1hLnJz) | `98.37% <ø> (ø)` | | | [aquadoggo/src/db/types/entry.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9kYi90eXBlcy9lbnRyeS5ycw==) | `90.00% <ø> (ø)` | | | [aquadoggo/src/db/types/operation.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9kYi90eXBlcy9vcGVyYXRpb24ucnM=) | `88.00% <ø> (ø)` | | | [aquadoggo/src/graphql/queries/collection.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9ncmFwaHFsL3F1ZXJpZXMvY29sbGVjdGlvbi5ycw==) | `99.60% <ø> (ø)` | | | [...ggo/src/graphql/scalars/document\_view\_id\_scalar.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9ncmFwaHFsL3NjYWxhcnMvZG9jdW1lbnRfdmlld19pZF9zY2FsYXIucnM=) | `78.57% <ø> (ø)` | | | [aquadoggo/src/materializer/tasks/dependency.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9tYXRlcmlhbGl6ZXIvdGFza3MvZGVwZW5kZW5jeS5ycw==) | `97.56% <ø> (ø)` | | | [...doggo/src/materializer/tasks/garbage\_collection.rs](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda#diff-YXF1YWRvZ2dvL3NyYy9tYXRlcmlhbGl6ZXIvdGFza3MvZ2FyYmFnZV9jb2xsZWN0aW9uLnJz) | `98.59% <ø> (ø)` | | | ... and [18 more](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda) | | ... and [1 file with indirect coverage changes](https://app.codecov.io/gh/p2panda/aquadoggo/pull/549/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=p2panda)

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