enhancement: record token.FileSet for every file

[sdghchj]

Describe the PR
sometimes, we want to know where the error is when parsing go files, so record token.FileSet for every file so that the position of parsing error can be acquired and output to log

Relation issue
#1392

[codecov]

Codecov Report

Base: 95.16% // Head: 95.10% // Decreases project coverage by -0.05% ⚠️

Coverage data is based on head (d0089f2) compared to base (e5d507d).
Patch coverage: 78.94% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1393      +/-   ##
==========================================
- Coverage   95.16%   95.10%   -0.06%     
==========================================
  Files          15       15              
  Lines        3060     3067       +7     
==========================================
+ Hits         2912     2917       +5     
- Misses         85       87       +2     
  Partials       63       63              

Impacted Files	Coverage Δ
types.go	100.00% <ø> (ø)
packages.go	89.09% <75.00%> (-0.85%)	⬇️
parser.go	94.25% <100.00%> (+0.20%)	⬆️

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