LightKrylov: Lightweight implementation of Krylov subspace techniques in modern Fortran

What's Changed Paper for the Journal of Open Source Softwares. by @loiseaujc in https://github.com/nekStab/LightKrylov/pull/123, https://github.com/nekStab/LightKrylov/pull/197, https://github.com/nekStab/LightKrylov/pull/127, https://github.com/nekStab/LightKrylov/pull/204, https://github.com/nekStab/LightKrylov/pull/208, https://github.com/nekStab/LightKrylov/pull/234, https://github.com/nekStab/LightKrylov/pull/240 Remove all unnecessary allocations by @loiseaujc in https://github.com/nekStab/LightKrylov/pull/218 Abstract Symmetric/Hermitian linop super type by @loiseaujc in https://github.com/nekStab/LightKrylov/pull/219 Complex roessler by @Simkern in https://github.com/nekStab/LightKrylov/pull/202 Update the README by @loiseaujc in https://github.com/nekStab/LightKrylov/pull/230 Updated doc landing page. by @loiseaujc in https://github.com/nekStab/LightKrylov/pull/235 Update CI with additional compilers and OS by @loiseaujc in https://github.com/nekStab/LightKrylov/pull/236 Add GitHub profile links for stdlib contributors by @perazz in https://github.com/nekStab/LightKrylov/pull/237 Full Changelog: https://github.com/nekStab/LightKrylov/compare/v0.1.0...v0.1.1