refactor: use @Setting and @SettingContext

[paullatzelsperger]

What this PR changes/adds

Issue eclipse-edc/GradlePlugins#19 deprecates @EdcSetting and @EdcSettingContext in favor of @Setting and @SettingContext, which are now used everywhere.

Why it does that

To keep the naming consistent with the other runtime metamodel annotations.

Further notes

• this PR should be merged AFTER this one refactor: deprecate EdcSetting, add Setting GradlePlugins#27
• Actions will fail until refactor: deprecate EdcSetting, add Setting GradlePlugins#27 is merged and published
• removed the modules.md file and its generation, as it sometimes caused problems. If needed, we can make it a separate gradle task.

Linked Issue(s)

Closes eclipse-edc/GradlePlugins#19

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)

[codecov-commenter]

Codecov Report

Base: 64.74% // Head: 64.74% // No change to project coverage 👍

Coverage data is based on head (605e521) compared to base (6623720).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2097   +/-   ##
=======================================
  Coverage   64.74%   64.74%           
=======================================
  Files         792      792           
  Lines       16881    16881           
  Branches     1090     1090           
=======================================
  Hits        10929    10929           
  Misses       5497     5497           
  Partials      455      455           

Impacted Files	Coverage Δ
...ceconnector/core/CoreDefaultServicesExtension.java	68.42% <ø> (ø)
...dataspaceconnector/core/CoreServicesExtension.java	93.93% <ø> (ø)
...aspaceconnector/core/base/OkHttpClientFactory.java	92.85% <ø> (ø)
...ceconnector/contract/ContractServiceExtension.java	95.77% <ø> (ø)
...connector/transfer/core/CoreTransferExtension.java	0.00% <ø> (ø)
...taplane/framework/DataPlaneFrameworkExtension.java	80.95% <ø> (ø)
...pi/configuration/IdsApiConfigurationExtension.java	88.23% <ø> (ø)
...aceconnector/ids/core/IdsCoreServiceExtension.java	0.00% <ø> (ø)
...tor/ids/core/service/ConnectorServiceSettings.java	1.17% <ø> (ø)
...aspaceconnector/ids/core/util/ConnectorIdUtil.java	0.00% <ø> (ø)
... and 33 more

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