[json-rpc] Fetch RpcInterface.h from csolution-rpc repository

[grasci-arm]

Fetch RpcInterface.h from csolution-rpc release assets:
https://github.com/Open-CMSIS-Pack/csolution-rpc/releases

[github-actions]

Test Results

    3 files     21 suites   11m 40s ⏱️
  391 tests   391 ✅ 0 💤 0 ❌
1 173 runs  1 173 ✅ 0 💤 0 ❌

Results for commit f5bb0aa.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 39 lines in your changes missing coverage. Please review.

Project coverage is 65.53%. Comparing base (f1e5df6) to head (f5bb0aa).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
tools/projmgr/src/ProjMgrRpcServer.cpp	0.00%	25 Missing ⚠️
tools/projmgr/src/ProjMgrRpcServerData.cpp	0.00%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2103      +/-   ##
==========================================
+ Coverage   65.32%   65.53%   +0.21%     
==========================================
  Files         182      181       -1     
  Lines       37099    36976     -123     
  Branches    21562    21491      -71     
==========================================
  Hits        24234    24234              
+ Misses       8480     8357     -123     
  Partials     4385     4385              

Flag	Coverage Δ
projmgr-cov	79.50% <0.00%> (+0.65%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
tools/projmgr/include/ProjMgrRpcServerData.h	0.00% <ø> (ø)
tools/projmgr/src/ProjMgrRpcServerData.cpp	0.00% <0.00%> (ø)
tools/projmgr/src/ProjMgrRpcServer.cpp	2.02% <0.00%> (ø)

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