x86: Implement test instruction

[gompoc]

It was only half-ish implemented before.

Previously test instructions such as:
test x, 1
would result in
ZF = x != 1
when it should be more like:
ZF = ( x & 1) == 0

[coveralls]

Coverage Report for CI Build 27493440270

Coverage decreased (-0.02%) to 33.745%

Details

• Coverage decreased (-0.02%) from the base build.
• Patch coverage: 14 uncovered changes across 1 file (0 of 14 lines covered, 0.0%).
• 1 coverage regression across 1 file.

Uncovered Changes

File	Changed	Covered	%
Cpp2IL.Core/InstructionSets/X86InstructionSet.cs	14	0	0.0%

Coverage Regressions

1 previously-covered line in 1 file lost coverage.

File	Lines Losing Coverage	Coverage
Cpp2IL.Core/InstructionSets/X86InstructionSet.cs	1	0.12%

---

Coverage Stats

Relevant Lines:	12475
Covered Lines:	4661
Line Coverage:	37.36%
Relevant Branches:	7916
Covered Branches:	2220
Branch Coverage:	28.04%
Branches in Coverage %:	Yes
Coverage Strength:	240954.17 hits per line

---

💛 - Coveralls