Added Gab Deck initial mvp

• Added:
- Gab Deck initial mvp

app/javascript/gabsocial/components/deck_column.js

@@ -0,0 +1,35 @@
+import React from 'react'
+import PropTypes from 'prop-types'
+import DeckColumnHeader from './deck_column_header'
+
+class DeckColumn extends React.PureComponent {
+
+  render() {
+    const {
+      title,
+      subtitle,
+      icon,
+      children,
+    } = this.props
+
+    return (
+      <div className={[_s.d, _s.w360PX, _s.px2, _s.bgSecondary, _s.h100VH].join(' ')}>
+        <div className={[_s.d, _s.w100PC, _s.bgPrimary, _s.h100VH].join(' ')}>
+          <DeckColumnHeader title={title} subtitle={subtitle} icon={icon} />
+          <div className={[_s.d, _s.w100PC, _s.overflowYScroll, _s.boxShadowNone, _s.posAbs, _s.top60PX, _s.left0, _s.right0, _s.bottom0].join(' ')}>
+            {children}
+          </div>
+        </div>
+      </div>
+    )
+  }
+
+}
+
+DeckColumn.propTypes = {
+  title: PropTypes.string,
+  subtitle: PropTypes.string,
+  icon: PropTypes.string,
+}
+
+export default DeckColumn