Add feature flags for static builds

[masa-koz]

Description

This pull request includes changes to add support for static linking. The most important changes include adding a new feature "static" to Cargo.toml and modifying the build script to handle static builds.

Testing

cargo test --features static

Documentation

No

[nibanks]

Could you update cargo.yml to build with this feature flag to make sure it works (and we don't break it in the future)?

[masa-koz]

I've added it in cargo.yml. Is this Ok?

[nibanks]

Looks like macOS fails to build static.

[masa-koz]

I've add framework linking for MacOS. Could you rerun cargo.yaml?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.86%. Comparing base (9c41c71) to head (64a4561).
Report is 16 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4691      +/-   ##
==========================================
+ Coverage   86.81%   86.86%   +0.04%     
==========================================
  Files          56       56              
  Lines       17361    17363       +2     
==========================================
+ Hits        15072    15082      +10     
+ Misses       2289     2281       -8     

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[nibanks]

Seeing some Ubuntu failures:

= note: /usr/bin/ld: /home/runner/work/msquic/msquic/target/debug/build/msquic-a397da1e6977dae8/out/lib/libmsquic.a(platform_posix.c.o): in function `CxPlatThreadCreate':
          /home/runner/work/msquic/msquic/src/platform/platform_posix.c:718: undefined reference to `numa_node_of_cpu'
          /usr/bin/ld: /home/runner/work/msquic/msquic/target/debug/build/msquic-a3[9](https://github.com/microsoft/msquic/actions/runs/12218329025/job/34128003790?pr=4691#step:12:10)7da1e6977dae8/out/lib/libmsquic.a(platform_posix.c.o): in function `CxPlatSystemLoad':
          /home/runner/work/msquic/msquic/src/platform/platform_posix.c:112: undefined reference to `numa_available'
          /usr/bin/ld: /home/runner/work/msquic/msquic/src/platform/platform_posix.c:[11](https://github.com/microsoft/msquic/actions/runs/12218329025/job/34128003790?pr=4691#step:12:12)3: undefined reference to `numa_num_configured_nodes'
          /usr/bin/ld: /home/runner/work/msquic/msquic/target/debug/build/msquic-a397da1e6977dae8/out/lib/libmsquic.a(platform_posix.c.o): in function `numa_node_to_cpus_compat':
          /usr/include/numa.h:464: undefined reference to `numa_node_to_cpus'
          collect2: error: ld returned 1 exit status

[masa-koz]

I've added libnuma linking for Linux.