MA0089 support string.IndexOf and string.Replace

[meziantou]

Fix #504

[codecov]

Codecov Report

Merging #510 (ae5a332) into main (ae9112c) will increase coverage by 0.02%.
The diff coverage is 96.87%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #510      +/-   ##
==========================================
+ Coverage   89.87%   89.90%   +0.02%     
==========================================
  Files         174      174              
  Lines       12631    12716      +85     
==========================================
+ Hits        11352    11432      +80     
- Misses       1279     1284       +5     

Impacted Files	Coverage Δ
...antou.Analyzer/Rules/OptimizeStartsWithAnalyzer.cs	95.72% <96.87%> (-1.34%)	⬇️