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Add sideloading functionality to neutrino #285

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Add sideloading functionality to neutrino #285

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Commits on Apr 10, 2024

  1. sideload: Initialize new package. 

    This commit introduces the `sideload` package,
designed to facilitate the sideloading of Bitcoin
blockchain headers from external sources.

Key components and changes:

- **Interfaces and Core Types**: Introduction of several
   interfaces and types such as `SourceType`, `dataType`,
   `dataSize`, `HeaderValidator`, `HeaderWriter`,
  `Checkpoints`, and `LoaderSource` to abstract the
   concepts of blockchain header validation, storage,
   and source management.

- **Loader Implementation**: The core of the sideload
    functionality is encapsulated in the `SideLoader`
    struct, which includes logic for header fetching,
    validation, and writing.

- **Binary Loader for Headers**: An implementation of the
LoaderSource interface for binary encoded headers is
included in this commit

Signed-off-by: Ononiwu Maureen <maureen.ononiwu@outlook.com>
    @Chinwendu20
    Ononiwu Maureen authored and Chinwendu20 committed Apr 10, 2024
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  2. neutrino: Add Checkpoints Structure 

    This commit introduces a new `Checkpoints` structure
for managing block header checkpoints.

Motivation:
Decoupling the logic for finding next and previous
header checkpoints from the `blockmanager`,
facilitating sharing this functionality between the
`sideload` package and `blockmanager`, promoting
code reuse and consistency across the components.

Signed-off-by: Ononiwu Maureen <maureen.ononiwu@outlook.com>
    @Chinwendu20
    Ononiwu Maureen authored and Chinwendu20 committed Apr 10, 2024
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  3. neutrino: Add block header validator implemenation 

    This commit introduces a new structure to decouple
the process of validating `wire.BlockHeaders`
from the blockmanager.

Signed-off-by: Ononiwu Maureen <maureen.ononiwu@outlook.com>
    @Chinwendu20
    Ononiwu Maureen authored and Chinwendu20 committed Apr 10, 2024
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  4. neutrino: Add block header writer implementation. 

    This commit introduces a new structure to decouple
the process of writing `wire.BlockHeaders` to the
block header store from the blockmanager.

Signed-off-by: Ononiwu Maureen <maureen.ononiwu@outlook.com>
    @Chinwendu20
    Ononiwu Maureen authored and Chinwendu20 committed Apr 10, 2024
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  5. neutrino: Add sideloading to chainservice 

    This commit adds the sideoading functionality to
neutrino's chainservice.

Signed-off-by: Ononiwu Maureen <maureen.ononiwu@outlook.com>
    @Chinwendu20
    Ononiwu Maureen authored and Chinwendu20 committed Apr 10, 2024
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  6. neutrino: Added itest for sideloading. 

    Signed-off-by: Ononiwu Maureen <maureen.ononiwu@outlook.com>
    @Chinwendu20
    Ononiwu Maureen authored and Chinwendu20 committed Apr 10, 2024
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