Move analysis management from Workspace into new AnalysisManager

[mborgerson]

Start paving the way to better analysis management:

• Move analysis scheduling out of Workspace
  • Fix implicit coupling causing analyses to not run due to scheduling in callbacks (e.g. if CFG was not selected)
• Move some analysis configuration validation out
• Decouple some callbacks
• Actually test all analyses being run

[codecov]

Codecov Report

❌ Patch coverage is 66.84783% with 61 lines in your changes missing coverage. Please review.
✅ Project coverage is 43.30%. Comparing base (b4c1c52) to head (35b8dc0).

Files with missing lines	Patch %	Lines
angrmanagement/data/jobs/cfg_generation.py	15.21%	35 Missing and 4 partials ⚠️
angrmanagement/ui/workspace.py	73.07%	7 Missing and 7 partials ⚠️
angrmanagement/logic/analysis_manager.py	90.00%	2 Missing and 2 partials ⚠️
...ngrmanagement/plugins/precise_diffing/diff_view.py	0.00%	2 Missing ⚠️
angrmanagement/ui/views/code_view.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1537      +/-   ##
==========================================
+ Coverage   43.14%   43.30%   +0.15%     
==========================================
  Files         266      268       +2     
  Lines       27346    27380      +34     
  Branches     3694     3689       -5     
==========================================
+ Hits        11798    11856      +58     
+ Misses      14976    14962      -14     
+ Partials      572      562      -10     

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