Add startupable

[dicko2]

For issue #15

[dicko2]

Autofac support started, will continue netcore later

[codecov-commenter]

Codecov Report

Merging #16 (fd24541) into main (038711f) will decrease coverage by 0.08%. The diff coverage is 50.00%.

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
- Coverage   78.59%   78.51%   -0.09%     
==========================================
  Files          19       19              
  Lines         710      712       +2     
==========================================
+ Hits          558      559       +1     
- Misses        152      153       +1     

Impacted Files	Coverage Δ
src/Agoda.IoC.Core/RegistrationContext.cs	89.34% <50.00%> (-0.33%)	:arrow_down:

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