BugsnagPerformanceImpl and Tracer refactor: Final changes

[robert-smartbear]

No description provided.

[github-actions]

BugsnagPerformance.framework binary size increased by 98,488 bytes from 845,952 to 944,440

    FILE SIZE        VM SIZE    
 --------------  -------------- 
   +14% +34.2Ki   +14% +34.2Ki    String Table
   +17% +29.4Ki   +17% +29.4Ki    Symbol Table
   +15% +26.9Ki   +15% +26.9Ki    __TEXT,__text
   +38% +3.81Ki   +38% +3.81Ki    __DATA_CONST,__const
  +8.4% +1.59Ki  +8.4% +1.59Ki    __TEXT,__gcc_except_tab
   +19% +1.46Ki   +19% +1.46Ki    __TEXT,__unwind_info
   +14%   +1004   +14%   +1004    __TEXT,__const
   +24%    +930   +24%    +930    __TEXT,__objc_methtype
  +2.2%    +535  +2.2%    +535    __TEXT,__objc_methname
   +19%    +384   +19%    +384    Function Start Addresses
  +0.8%    +272  +0.8%    +272    __DATA,__objc_const
  +9.8%    +192  +9.8%    +192    Rebase Info
  +0.8%     +32  +0.8%     +32    Binding Info
  +0.2%     +16  +0.2%     +16    __TEXT,__cstring
  -0.7%     -12  -0.7%     -12    __TEXT,__stub_helper
  -0.5%     -27  -0.5%     -27    [4 Others]
  -0.8%     -32  -0.8%     -32    Lazy Binding Info
  [ = ]       0  -3.1%    -184    [__LINKEDIT]
 -11.6%    -264 -12.4%    -264    [__DATA]
  -0.9%    -374  -0.9%    -374    [__TEXT]
 -31.5% -3.81Ki -31.5% -3.81Ki    [__DATA_CONST]
   +12% +96.2Ki   +12% +96.0Ki    TOTAL

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