Populate graphql with transaction data

[goshawk-3]

fixes #1284

[codecov-commenter]

Codecov Report

Merging #1289 (751804e) into master (828364b) will decrease coverage by 8.46%.
The diff coverage is 49.11%.

@@            Coverage Diff             @@
##           master    #1289      +/-   ##
==========================================
- Coverage   50.51%   42.05%   -8.47%     
==========================================
  Files         145      144       -1     
  Lines        7544     9017    +1473     
==========================================
- Hits         3811     3792      -19     
- Misses       3066     4654    +1588     
+ Partials      667      571      -96     

Impacted Files	Coverage Δ
pkg/config/genesis/config.go	0.00% <0.00%> (ø)
pkg/core/candidate/validator.go	64.00% <ø> (+6.85%)	⬆️
pkg/core/chain/mock.go	9.09% <ø> (+0.75%)	⬆️
...nsensus/blockgenerator/candidate/blockgenerator.go	0.00% <0.00%> (-64.29%)	⬇️
...core/consensus/blockgenerator/candidate/genesis.go	0.00% <0.00%> (-69.24%)	⬇️
...kg/core/consensus/blockgenerator/candidate/mock.go	0.00% <0.00%> (ø)
...ore/consensus/blockgenerator/candidate/testutil.go	0.00% <0.00%> (-90.91%)	⬇️
pkg/core/consensus/comms.go	0.00% <0.00%> (ø)
pkg/core/consensus/fixtures.go	0.00% <0.00%> (ø)
pkg/core/consensus/header/header.go	24.50% <0.00%> (+2.41%)	⬆️
... and 187 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update c4ddd70...751804e. Read the comment docs.

[herr-seppia]

RFC in reward calculation

[herr-seppia]

LGTM