moved stylesheets to own folder

angular.json

drugstone-test.html

...p/components/analysis-panel/analysis-panel.component.html

...p/components/analysis-panel/analysis-panel.component.scss

...nents/analysis-panel/drug-table/drug-table.component.html

...nents/analysis-panel/prot-table/prot-table.component.html

src/app/components/dataset-tile/dataset-tile.component.html

...p/components/network-legend/network-legend.component.scss

src/app/components/query-tile/query-tile.component.html

src/app/components/task-list/task-list.component.html

src/app/components/toggle/toggle.component.html

...-expressed-proteins/add-expressed-proteins.component.html

...pp/dialogs/custom-proteins/custom-proteins.component.html

...pp/dialogs/launch-analysis/launch-analysis.component.html

src/app/pages/explorer-page/explorer-page.component.html

src/app/pages/explorer-page/explorer-page.component.scss

src/app/pages/explorer-page/explorer-page.component.ts

src/styles.scss

src/stylesheets/primeng.scss

src/stylesheets/styles.scss