Unify VFS interfaces

[rodinaarssen]

Closes #2701

[codecov]

Codecov Report

❌ Patch coverage is 3.80818% with 682 lines in your changes missing coverage. Please review.
✅ Project coverage is 46%. Comparing base (ae2168c) to head (c64d5b1).

Files with missing lines	Patch %	Lines
...mpl/uri/remote/RemoteExternalResolverRegistry.java	0%	244 Missing ⚠️
...rg/rascalmpl/uri/remote/jsonrpc/RemoteIOError.java	0%	61 Missing ⚠️
...rascalmpl/uri/remote/RascalFileSystemServices.java	0%	59 Missing ⚠️
src/org/rascalmpl/uri/URIResolverRegistry.java	17%	26 Missing and 3 partials ⚠️
.../uri/remote/jsonrpc/ISourceLocationChangeType.java	0%	22 Missing ⚠️
.../org/rascalmpl/uri/remote/jsonrpc/CopyRequest.java	0%	17 Missing ⚠️
...mpl/uri/remote/jsonrpc/ISourceLocationChanged.java	0%	17 Missing ⚠️
...g/rascalmpl/uri/remote/jsonrpc/DirectoryEntry.java	0%	16 Missing ⚠️
...rg/rascalmpl/uri/remote/jsonrpc/RenameRequest.java	0%	15 Missing ⚠️
...org/rascalmpl/uri/remote/jsonrpc/WatchRequest.java	0%	13 Missing ⚠️
... and 34 more

Additional details and impacted files

@@           Coverage Diff            @@
##              main   #2641    +/-   ##
========================================
- Coverage       46%     46%    -1%     
- Complexity    6720    6731    +11     
========================================
  Files          794     829    +35     
  Lines        65932   66582   +650     
  Branches      9888    9955    +67     
========================================
+ Hits         30765   30798    +33     
- Misses       32789   33406   +617     
  Partials      2378    2378            

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[toinehartman]

All of this (and the companion PR usethesource/rascal-language-servers#967) look like a nice unification and clean-up of interfaces.

[DavyLandman]

It's making progress, but it's not there yet.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud