Specify const types to support 32-bit arch

[wolfogre]

Fix #146.

On 386 arch, the bits length of the int type is 32, which makes it impossible to store or compare with math.MaxUint32 or 0x8F92EAB1.

Go will implicitly use the int type, like the returned type of len(); And convert untyped const integer to the int type, like the input type of fmt.Errorf().

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 77.34%. Comparing base (d37ab8e) to head (301c94b).
Report is 36 commits behind head on main.

Files	Patch %	Lines
pkg/encoder.go	0.00%	3 Missing and 3 partials ⚠️
pkg/seekable.go	0.00%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #147      +/-   ##
==========================================
+ Coverage   76.10%   77.34%   +1.24%     
==========================================
  Files           7        7              
  Lines         477      384      -93     
==========================================
- Hits          363      297      -66     
+ Misses         88       61      -27     
  Partials       26       26              

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[wolfogre]

@SaveTheRbtz Maybe we can filter out less commonly used arch and test for main arch. Feel free to update.

[SaveTheRbtz]

Switched to using the "first class" targets for now:

• chore(ci): release for all first class targets #149
• chore(ci): remove unused filters #154