Resolve "Refactor API conversion types"

This MR separates the functionality of `managed_rpc_type<T>` into
dedicated lifetime management types and conversion functions. This
makes for clearer the code since it is now possible to know when
a conversion is performed.

Lifetime management for C-types is now done with the `managed_ctype<T>`
types, which act only as holders of dynamically allocated C types and do not
perform any type conversions whatsoever.

Type conversions are now done with the `T1 convert(T2 obj)` family of functions.
When converting from CXX to C API types, these functions effectively
return instances of the appropriate `managed_ctype<T>`s. If one wishes to
relinquish ownership of the content of the `managed_ctype<T>` (e.g. to
pass it to a pure C function that will release it), this can be done
with the `managed_ctype<T>::release()` function.

Closes #46

See merge request !32

This commit separates the functionality of managed_rpc_type<T> into
dedicated lifetime management types and conversion functions. This
makes for clearer the code since it is now possible to know when
a conversion is performed.

Lifetime management for C-types is now done with the managed_ctype<T>
types, which act only as holders of dynamically allocated C types and do not
perform any type conversions whatsoever.

Type conversions are now done with the T1 convert(T2 obj) family of functions.
When converting from CXX to C API types, these functions effectively
return instances of the appropriate managed_ctype<T>s. If one wishes to
relinquish ownership of the content of the managed_ctype<T> (e.g. to
pass it to a pure C function that will release it), this can be done
with the managed_ctype<T>::release() function.

Resolve "Enable `-Werror` build flag"

Closes #42

See merge request !29

Resolve "Enable ASan build profile in CI"

This MR enables the usage of the ASan build configuration profile in the CI. This makes it so that CMake builds all binaries with ASan support, which in turn allows us to run all tests under ASan automatically.

Closes #43

See merge request !28

Merge branch '29-fix-adm_register_pfs_storage-adm_remove_pfs_storage-and-adm_update_pfs_storage' into 'main'

Resolve "Fix ADM_register_pfs_storage, ADM_remove_pfs_storage and ADM_update_pfs_storage"

Closes #29

See merge request !27

Fix missing definitions of ADM_register_pfs_storage, ADM_update_pfs_storage and ADM_remove_pfs_storage

Resolve "Integrate AGIOS in build system"

This MR adds AGIOS to the build system as a dependency for `scord` and `scord-ctl`.

Closes #15

See merge request !20