Added Webclient, refactored Webserver to share streamed body sending and receiving logic.

[jurgenvinju]

• adds Webclient.rsc which offers Response fetch(Request)
• mirrors Webserver.rsc exactly, reusing the same Request and Response data-type
• full implementation of HTTP1.1 client
• restructuring of Webserver implementation to accomodate the client API: split Body type into send and receive kind:
  • send is used for server response and client put and get
  • receive is used for server put and get and client response
• factored WebBody.java to reuse receiving and sending HTTP bodies in both the client and the server
• Server POST/PUT fully implemented now.
• Added JSON, HTML, XML (de)serialization for sending and receiving from streamed input (avoids local string copying)
• add tests for the client
• add tests for the server

[codecov]

Codecov Report

❌ Patch coverage is 0% with 284 lines in your changes missing coverage. Please review.
✅ Project coverage is 46%. Comparing base (6212f69) to head (748dcc7).
⚠️ Report is 91 commits behind head on main.

Files with missing lines	Patch %	Lines
src/org/rascalmpl/library/util/Webclient.java	0%	283 Missing ⚠️
.../rascalmpl/exceptions/RuntimeExceptionFactory.java	0%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff            @@
##              main   #2771    +/-   ##
========================================
- Coverage       46%     46%    -1%     
+ Complexity    6718    6714     -4     
========================================
  Files          794     795     +1     
  Lines        65937   66220   +283     
  Branches      9889    9918    +29     
========================================
+ Hits         30760   30761     +1     
- Misses       32797   33079   +282     
  Partials      2380    2380            

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[DavyLandman]

I think this is a nice idea but not ready yet, I've written down my concerns.

I think this needs tests.

[jurgenvinju]

Great review @DavyLandman I'll try and improve this PR and let's have a look together later again.

I've tested this client so far with a couple of web APIs and some very large test downloads. It seems very natural apart from the host/path/query separation. I think some shorthands where a full URL can be used which is split up internally would be nice. Also there is no support for fragments 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