[WIP] support HCL decoding

[goldeneggg]

TODO

[codecov-commenter]

Codecov Report

Merging #39 (14c6245) into master (8e887e1) will decrease coverage by 1.25%.
The diff coverage is 84.56%.

@@            Coverage Diff             @@
##           master      #39      +/-   ##
==========================================
- Coverage   92.19%   90.93%   -1.26%     
==========================================
  Files           7        7              
  Lines        1191     1247      +56     
==========================================
+ Hits         1098     1134      +36     
- Misses         76       89      +13     
- Partials       17       24       +7     

Flag	Coverage Δ
unittests	90.93% <84.56%> (-1.26%)	⬇️

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

Impacted Files	Coverage Δ
dynamicstruct/decoder/data_type.go	74.19% <70.83%> (-16.72%)	⬇️
dynamicstruct/decoder/decoder.go	76.47% <90.47%> (+0.03%)	⬆️
getter.go	99.13% <100.00%> (ø)

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