add vinteum to README

[plebhash]

adding vinteum to the supporters, like in stratum-mining/stratumprotocol.org#242

rendering: https://github.com/plebhash/stratum/tree/vinteum_readme#-supporters

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 19.09%. Comparing base (ad01bdf) to head (6dfa8bd).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1361   +/-   ##
=======================================
  Coverage   19.09%   19.09%           
=======================================
  Files         166      166           
  Lines       11062    11062           
=======================================
  Hits         2112     2112           
  Misses       8950     8950           

Flag	Coverage Δ
binary_codec_sv2-coverage	0.00% <ø> (ø)
binary_serde_sv2-coverage	3.55% <ø> (ø)
binary_sv2-coverage	5.34% <ø> (ø)
bip32_derivation-coverage	0.00% <ø> (ø)
buffer_sv2-coverage	25.02% <ø> (ø)
codec_sv2-coverage	0.01% <ø> (ø)
common_messages_sv2-coverage	0.13% <ø> (ø)
const_sv2-coverage	0.00% <ø> (ø)
error_handling-coverage	0.00% <ø> (ø)
framing_sv2-coverage	0.28% <ø> (ø)
jd_client-coverage	0.00% <ø> (ø)
jd_server-coverage	7.79% <ø> (ø)
job_declaration_sv2-coverage	0.00% <ø> (ø)
key-utils-coverage	2.39% <ø> (ø)
mining-coverage	2.44% <ø> (+0.01%)	⬆️
mining_device-coverage	0.00% <ø> (ø)
mining_proxy_sv2-coverage	0.70% <ø> (ø)
noise_sv2-coverage	4.44% <ø> (ø)
pool_sv2-coverage	2.05% <ø> (ø)
protocols	24.57% <ø> (ø)
roles	6.55% <ø> (ø)
roles_logic_sv2-coverage	7.93% <ø> (ø)
sv2_ffi-coverage	0.00% <ø> (ø)
template_distribution_sv2-coverage	0.00% <ø> (ø)
translator_sv2-coverage	9.60% <ø> (ø)
utils	?
v1-coverage	2.41% <ø> (ø)

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