ci: add Makefile

[Roznovjak]

No description provided.

[codecov]

Codecov Report

Merging #337 (377a339) into master (f1bc84e) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #337      +/-   ##
==========================================
+ Coverage   15.27%   15.31%   +0.03%     
==========================================
  Files          20       20              
  Lines        6781     6812      +31     
==========================================
+ Hits         1036     1043       +7     
- Misses       5745     5769      +24     

Impacted Files	Coverage Δ
pallets/xyk/src/benchmarking.rs	98.24% <100.00%> (-1.76%)	⬇️
pallets/claims/src/migration.rs	63.63% <0.00%> (-6.37%)	⬇️
pallets/faucet/src/lib.rs	77.14% <0.00%> (-4.11%)	⬇️
pallets/exchange/benchmarking/src/lib.rs	96.02% <0.00%> (-3.98%)	⬇️
pallets/transaction-multi-payment/src/lib.rs	67.69% <0.00%> (-2.47%)	⬇️
.../transaction-multi-payment/benchmarking/src/lib.rs	97.61% <0.00%> (-2.39%)	⬇️
pallets/claims/src/lib.rs	76.47% <0.00%> (-1.53%)	⬇️
pallets/xyk/src/lib.rs	83.33% <0.00%> (-1.11%)	⬇️
pallets/exchange/src/lib.rs	73.95% <0.00%> (-0.52%)	⬇️
... and 4 more

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