feat: add toBuilder for resource definitions

[ronjaquensel]

What this PR changes/adds

It adds a toBuilder() method for all ResourceDefinitions.

Why it does that

During policy evaluation, functions may modify a ResourceDefinition. When each definition is re-created from scratch, information may get lost. Therefore, definitions should be convertable to a builder that can be easily modified.

Linked Issue(s)

Closes #1717

Checklist

• added appropriate tests?
• performed checkstyle check locally?
• added/updated copyright headers?
• documented public classes/methods?
• added/updated relevant documentation?
• assigned appropriate label? (exclude from changelog with label no-changelog)
• formatted title correctly? (take a look at the CONTRIBUTING and styleguide for details)

[paullatzelsperger]

Currently, all subclasses of ResourceDefinition have to call initialize the base class's id and transferprocessId properties by invoking

    .id(id)
    .transferProcess(transferProcessId)
    //

Maybe that could be done by the ResourceDefinition class to avoid code duplication? Also, if the base class ever receives another property, that would have t be re-done in all the subclasses...

[ronjaquensel]

Currently, all subclasses of ResourceDefinition have to call initialize the base class's id and transferprocessId properties by invoking

    .id(id)
    .transferProcess(transferProcessId)
    //

Maybe that could be done by the ResourceDefinition class to avoid code duplication? Also, if the base class ever receives another property, that would have t be re-done in all the subclasses...

@paullatzelsperger good point, updated it

[codecov-commenter]

Codecov Report

Base: 63.63% // Head: 63.64% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (d8ddaab) compared to base (1daf73d).
Patch coverage: 76.92% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1992      +/-   ##
==========================================
+ Coverage   63.63%   63.64%   +0.01%     
==========================================
  Files         772      772              
  Lines       16357    16370      +13     
  Branches     1055     1055              
==========================================
+ Hits        10408    10418      +10     
- Misses       5505     5508       +3     
  Partials      444      444              

Impacted Files	Coverage Δ
.../spi/types/domain/transfer/ResourceDefinition.java	84.21% <0.00%> (-15.79%)	⬇️
...on/azure/blob/ObjectStorageResourceDefinition.java	100.00% <100.00%> (ø)
...sion/http/impl/AbstractHttpResourceDefinition.java	100.00% <100.00%> (ø)
...sion/http/impl/HttpProviderResourceDefinition.java	100.00% <100.00%> (ø)
...r/aws/s3/provision/S3BucketResourceDefinition.java	100.00% <100.00%> (ø)

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