refactor: avoid unnecessary meta model dependency injection

[ndr-brt]

What this PR changes/adds

Avoids to inject runtime-metamodel automatically on every extension that applies the build plugin

Why it does that

it is not really necessary, and it will remove some complexity (the runtime-metamodel version is always equal to the edc version)

Further notes

List other areas of code that have changed but are not necessarily linked to the main feature. This could be method
signature changes, package declarations, bugs that were encountered and were fixed inline, etc.

Linked Issue(s)

Closes #197

Please be sure to take a look at the contributing guidelines and our etiquette for pull requests.

[github-actions]

Test Results

40 tests  ±0   40 ✔️ ±0   16s ⏱️ ±0s
10 suites ±0     0 💤 ±0 
10 files   ±0     0 ❌ ±0 

Results for commit 20f1c03. ± Comparison against base commit 28c2dbb.

[paullatzelsperger]

At this point, is there much difference between the runtime-metamodel and others, such as Jackson?

I'm assuming, that doing this (=removing default dep), and having it exposed through an api(...) in the SPI modules of EDC, we'd mostly achieve the end result, but then the same argument could be made for getting rid of all default dependencies.

If we do - and I'm not saying we shouldn't - then I think this needs to be discussed in the Technical Committers group and captured in a D-R.

[ndr-brt]

superseded by #200