Explore: adds MetaInfoText component

public/app/features/explore/MetaInfoText.tsx

+import React, { memo, useContext } from 'react';
+import { css } from 'emotion';
+import { GrafanaTheme } from '@grafana/data';
+import { stylesFactory, ThemeContext } from '@grafana/ui';
+
+const getStyles = stylesFactory((theme: GrafanaTheme) => ({
+  metaContainer: css`
+    flex: 1;
+    color: ${theme.colors.textWeak};
+    margin-bottom: ${theme.spacing.d};
+    min-width: 30%;
+    display: flex;
+  `,
+  metaItem: css`
+    margin-right: ${theme.spacing.d};
+    display: flex;
+    align-items: baseline;
+  `,
+  metaLabel: css`
+    margin-right: calc(${theme.spacing.d} / 2);
+    font-size: ${theme.typography.size.sm};
+    font-weight: ${theme.typography.weight.semibold};
+  `,
+  metaValue: css`
+    font-family: ${theme.typography.fontFamily.monospace};
+  `,
+}));
+
+interface MetaItemProps {
+  label?: string;
+  value: string;
+}
+
+const MetaInfoItem = memo(function MetaInfoItem(props: MetaItemProps) {
+  const theme = useContext(ThemeContext);
+  const style = getStyles(theme);
+  const { label, value } = props;
+
+  return (
+    <div className={style.metaItem}>
+      {label && <span className={style.metaLabel}>{label}:</span>}
+      <span className={style.metaValue}>{value}</span>
+    </div>
+  );
+});
+
+export interface MetaInfoTextProps {
+  metaItems: MetaItemProps[];
+}
+
+export const MetaInfoText = memo(function MetaInfoText(props: MetaInfoTextProps) {
+  const theme = useContext(ThemeContext);
+  const style = getStyles(theme);
+  const { metaItems } = props;
+
+  return (
+    <div className={style.metaContainer}>
+      {metaItems.map((item, index) => (
+        <MetaInfoItem key={`${index}-${item.label}`} label={item.label} value={item.value} />
+      ))}
+    </div>
+  );
+});
+
+export default MetaInfoText;