feat: frontend galleries DataGrid feat: backend for galleries DataGrid

feat: footer, header, loader

feat: footer

fix: .npmrc ignore

feat: SV Admin Class

fix: gitignore

Запрос на слияние 'SV-001' (#2) из SV-001 в develop

feat: SV core class definitions

feat: SV core class definitions

feat: SV development shell

DEVELOP: SV Tools class

DEVELOP: First commit

DEVELOP: First commit