Convert strings and slices using the officially recommended way

[hopehook]

Go official is expected to provide unsafe.{SliceData, Slice, StringData, String} series methods in version 1.20 for conversion of strings and slices.

Reference: https://github.com/golang/go/issues/53003

[hopehook]

This change needs to wait for the release of go1.20, please review it at that time, thank you.

[appleboy]

Please add a reference documentation link.

[appleboy]

please rebase the master branch.

[codecov[bot]]

Codecov Report

Merging #3344 (76a8ac8) into master (33ab0fc) will increase coverage by 0.36%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3344      +/-   ##
==========================================
+ Coverage   98.27%   98.63%   +0.36%     
==========================================
  Files          42       42              
  Lines        3127     3151      +24     
==========================================
+ Hits         3073     3108      +35     
+ Misses         40       29      -11     
  Partials       14       14              

Flag	Coverage Δ
	98.63% <ø> (+0.36%)	:arrow_up:
go-1.17	?
go-1.18	98.54% <ø> (+0.36%)	:arrow_up:
go-1.19	98.63% <ø> (+0.36%)	:arrow_up:
go-1.20	98.63% <ø> (?)
macos-latest	98.63% <ø> (+0.36%)	:arrow_up:
ubuntu-latest	98.63% <ø> (+0.36%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
render/json.go	82.75% <0.00%> (-0.39%)	:arrow_down:
tree.go	100.00% <0.00%> (ø)
routergroup.go	100.00% <0.00%> (ø)
binding/toml.go	100.00% <0.00%> (ø)
test_helpers.go	100.00% <0.00%> (ø)
render/msgpack.go	100.00% <0.00%> (ø)
binding/binding.go	100.00% <0.00%> (ø)
binding/msgpack.go	100.00% <0.00%> (ø)
gin.go	99.19% <0.00%> (+<0.01%)	:arrow_up:
context.go	97.97% <0.00%> (+0.01%)	:arrow_up:
... and 3 more

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[thinkerou]

maybe we also add reference documentation link to comment of code.

[hopehook]

maybe we also add reference documentation link to comment of code.

@thinkerou Please take a look, thank you.