Reorganize files, remove access to global data from aries-vcx src

[Patrik-Stas]

• Create new /global module for everything related to global storage on aries-vcx level. The goal is for this module to not exist, eventually. Globals should be moved to libvcx
• Remove any get_main_wallet_handle calls in aries-vcx, instead call this from libvcx and inject into aries-vcx calls
• Same for get_main_agency_client
• aries-vcx code now does not ever access global data (agency_client or wallet_handle)

Signed-off-by: Patrik Stas patrik.stas@absa.africa

[codecov-commenter]

Codecov Report

Merging #517 (72f676c) into main (24701ca) will increase coverage by 0.20%.
The diff coverage is 28.02%.

@@            Coverage Diff             @@
##             main     #517      +/-   ##
==========================================
+ Coverage   54.77%   54.97%   +0.20%     
==========================================
  Files         163      167       +4     
  Lines       14641    14629      -12     
  Branches     4076     4061      -15     
==========================================
+ Hits         8019     8042      +23     
+ Misses       2361     2344      -17     
+ Partials     4261     4243      -18     

Flag	Coverage Δ
integration-aries-vcx	42.06% <26.28%> (+0.49%)	⬆️
unittests-agency-client	23.59% <44.82%> (-0.39%)	⬇️
unittests-aries-vcx	50.79% <26.68%> (+0.13%)	⬆️

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

Impacted Files	Coverage Δ
agency_client/src/api/downloaded_message.rs	0.00% <0.00%> (ø)
agency_client/src/api/onboarding.rs	0.00% <0.00%> (ø)
agency_client/src/utils/libindy/crypto.rs	26.66% <0.00%> (ø)
aries_vcx/src/handlers/issuance/holder.rs	46.42% <0.00%> (ø)
aries_vcx/src/handlers/issuance/issuer.rs	49.19% <0.00%> (ø)
aries_vcx/src/handlers/out_of_band/receiver.rs	34.28% <0.00%> (ø)
...ries_vcx/src/handlers/proof_presentation/prover.rs	58.71% <0.00%> (ø)
...es_vcx/src/handlers/proof_presentation/verifier.rs	47.93% <0.00%> (ø)
.../src/libindy/credential_def/revocation_registry.rs	47.67% <0.00%> (ø)
...s_vcx/src/libindy/proofs/prover/prover_internal.rs	77.09% <0.00%> (ø)
... and 73 more