Support to emit CFG for Graphviz..

[sisshiki1969]

• Support feature "emit-cfg" for emitting CFG as a .dot file.
• Refactor TraceIr.
• Refactor InlineCall.

[codecov]

Codecov Report

Attention: Patch coverage is 94.06513% with 113 lines in your changes missing coverage. Please review.

Project coverage is 92.37%. Comparing base (6e37eaa) to head (73b8390).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
monoruby/src/value/rvalue.rs	64.91%	20 Missing ⚠️
monoruby/src/compiler/jitgen/asmir/merge.rs	80.00%	18 Missing ⚠️
monoruby/src/compiler/jitgen/asmir/slot.rs	73.33%	16 Missing ⚠️
monoruby/src/compiler/jitgen.rs	97.58%	14 Missing ⚠️
monoruby/src/value/rvalue/method.rs	0.00%	14 Missing ⚠️
monoruby/src/compiler/jitgen/basic_block.rs	59.09%	9 Missing ⚠️
monoruby/src/compiler/jitgen/trace_ir.rs	98.36%	7 Missing ⚠️
monoruby/src/compiler/jitgen/asmir.rs	96.11%	4 Missing ⚠️
monoruby/src/value/rvalue/hash.rs	80.00%	4 Missing ⚠️
monoruby/src/bytecode.rs	99.26%	2 Missing ⚠️
... and 3 more

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #56      +/-   ##
==========================================
- Coverage   92.43%   92.37%   -0.07%     
==========================================
  Files         127      127              
  Lines       40927    41727     +800     
==========================================
+ Hits        37830    38544     +714     
- Misses       3097     3183      +86     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.