Track local variables

[ndkoval]

Step 1:

• Add bytecode injections to track local variable accesses (start with the related commits in the rr-debugger branch).
• Track current local variable states in ManagedStrategy; this will allow implementing Try to improve caller (a.k.a. owner) names via tracking local variables #476.

Step 2:

• Add local variable accesses to the detailed execution trace and introduce new TracePoints for that.
• Pass local variable accesses to the plugin and show them. Importantly, we need to make it possible to hide them and show shared and local state accesses differently (different colors as in the editor?)