refactor!: move encoding logic to sub-package

[abemedia]

No description provided.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.05 ⚠️

Comparison is base (c8cd2de) 93.16% compared to head (3f95838) 93.11%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #111      +/-   ##
==========================================
- Coverage   93.16%   93.11%   -0.05%     
==========================================
  Files          19       19              
  Lines         775      770       -5     
==========================================
- Hits          722      717       -5     
  Misses         37       37              
  Partials       16       16              

Impacted Files	Coverage Δ
api.go	100.00% <ø> (ø)
encoding/decode.go	100.00% <100.00%> (ø)
encoding/encode.go	100.00% <100.00%> (ø)
encoding/form/form.go	72.72% <100.00%> (ø)
encoding/json/json.go	100.00% <100.00%> (ø)
encoding/msgpack/msgpack.go	100.00% <100.00%> (ø)
encoding/text/decode.go	79.12% <100.00%> (ø)
encoding/text/encode.go	96.15% <100.00%> (ø)
encoding/xml/xml.go	100.00% <100.00%> (ø)
encoding/yaml/yaml.go	100.00% <100.00%> (ø)
... and 2 more

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[github-actions]

Benchmark Result

Benchmark diff with base branch

goos: linux
goarch: amd64
pkg: github.com/abemedia/go-don
cpu: Intel(R) Xeon(R) CPU E5-2673 v4 @ 2.30GHz
          │ bench-master.txt │           bench-new.txt            │
          │      sec/op      │   sec/op     vs base               │
Handler-2        562.1n ± 4%   520.4n ± 3%  -7.43% (p=0.000 n=10)

          │ bench-master.txt │         bench-new.txt          │
          │       B/op       │    B/op     vs base            │
Handler-2         72.00 ± 0%   72.00 ± 0%  ~ (p=1.000 n=10) ¹
¹ all samples are equal

          │ bench-master.txt │         bench-new.txt          │
          │    allocs/op     │ allocs/op   vs base            │
Handler-2         2.000 ± 0%   2.000 ± 0%  ~ (p=1.000 n=10) ¹
¹ all samples are equal