SHIM

[tzaeschke]

Add SHIM component, see also #130.

[codecov]

Codecov Report

Attention: Patch coverage is 79.80769% with 21 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/main/java/org/scion/jpan/internal/Shim.java	81.57%	11 Missing and 3 partials ⚠️
src/main/java/org/scion/jpan/ScmpResponder.java	70.00%	3 Missing and 3 partials ⚠️
src/main/java/org/scion/jpan/Scmp.java	50.00%	1 Missing ⚠️

Files with missing lines	Coverage Δ	Complexity Δ
...n/java/org/scion/jpan/AbstractDatagramChannel.java	84.51% <ø> (+1.53%)	75.00 <0.00> (+1.00)
src/main/java/org/scion/jpan/ScionService.java	66.66% <100.00%> (+0.12%)	51.00 <0.00> (ø)
src/main/java/org/scion/jpan/ScmpChannel.java	88.69% <100.00%> (ø)	19.00 <1.00> (ø)
src/main/java/org/scion/jpan/Scmp.java	88.26% <50.00%> (ø)	7.00 <1.00> (ø)
src/main/java/org/scion/jpan/ScmpResponder.java	85.29% <70.00%> (+4.61%)	8.00 <2.00> (ø)
src/main/java/org/scion/jpan/internal/Shim.java	81.57% <81.57%> (ø)	18.00 <18.00> (?)

... and 1 file with indirect coverage changes