fix: invalid extension data from GraphQL, plugin manifest schema improvement, more friendly error from manifest parser

[rot1024]

• Fix invalid extension title and description are returned on GraphQL
• Make errors more friendly from plugin manifest parser
• Plugin manifest schema improvement
  • Make "visualizer" field optional in extensions
  • Rename title field to "name" in root and extensions

[codecov]

Codecov Report

Merging #56 (7237044) into main (eb1db48) will increase coverage by 0.00%.
The diff coverage is 36.70%.

@@           Coverage Diff           @@
##             main      #56   +/-   ##
=======================================
  Coverage   16.51%   16.51%           
=======================================
  Files         246      246           
  Lines       42988    43009   +21     
=======================================
+ Hits         7099     7103    +4     
- Misses      34884    34899   +15     
- Partials     1005     1007    +2     

Impacted Files	Coverage Δ
internal/adapter/gql/generated.go	0.00% <0.00%> (ø)
internal/infrastructure/mongo/mongodoc/plugin.go	0.00% <0.00%> (ø)
internal/usecase/interactor/plugin_upload.go	0.00% <0.00%> (ø)
pkg/plugin/extension_builder.go	93.10% <ø> (ø)
pkg/plugin/pluginpack/package.go	73.91% <25.00%> (ø)
pkg/plugin/manifest/convert.go	88.42% <60.71%> (-3.37%)	⬇️
pkg/plugin/manifest/parser_translation.go	75.80% <100.00%> (ø)
pkg/rerror/error.go	100.00% <100.00%> (ø)