View `SnoopCompile` flamegraph on HTML canvas

[theogf]

Closes https://github.com/pfitzseb/ProfileCanvas.jl/issues/33

This is non-trivial MR which:

• Adds a conversion from the Flamegraph type from FlameGraphs.jl to the ProfileFrame defined here.
• Creates a package extension on SnoopCompile.jl and add the @snoop_view macro which run @snoopi_deep on an expression and returns a ProfileCanvas HTML flamegraph
• For this MR to work nicely https://github.com/pfitzseb/jl-profile.js/pull/1 is required to be merged.