Fix any bugs of encoder

[goccy]

• fix some issues ( Getting Error when trying to include json.Marshal in gofiber JsonEncoder #104 MarshalIndent returns empty string #118 go-json panic with custom marshar & struct embed & float field? #144 Panic when using a custom type with MarshalJSON() + omitempty + specific order of fields in a struct #147 )
• fix recursive call operation
• use json.Number of encoding/json
• fix encoding of MarshalJSON and MarshalText
• fix pointer operation
• remove "anonymous" operation and use anonymousHead property of opcode for reducing code size
• remove "only" operation and use indirect property of opcode for reducing code size
• add test cases for array/slice/map/marshaler
• internal: remove root property from encodeCompileContext and opcode
• add "compile test on limited memory resource environment"

[codecov-io]

Codecov Report

Merging #148 (096bbf3) into master (116df92) will decrease coverage by 0.01%.
The diff coverage is 84.36%.

@@            Coverage Diff             @@
##           master     #148      +/-   ##
==========================================
- Coverage   72.23%   72.21%   -0.02%     
==========================================
  Files          42       42              
  Lines       23546    19822    -3724     
==========================================
- Hits        17009    14315    -2694     
+ Misses       5826     4895     -931     
+ Partials      711      612      -99