Add self-labeling controls (#1141)

* Add self-label modal

* Use the shield-exclamation icon consistently on post moderation

* Wire up self-labeling

* Bump @atproto/api@0.6.0

* Bump @atproto/dev-env@^0.2.3

* Add e2e test for self-labeling

* Fix types

src/view/com/composer/labels/LabelsBtn.tsx

@@ -0,0 +1,53 @@
+import React from 'react'
+import {StyleSheet} from 'react-native'
+import {observer} from 'mobx-react-lite'
+import {Button} from 'view/com/util/forms/Button'
+import {usePalette} from 'lib/hooks/usePalette'
+import {useStores} from 'state/index'
+import {ShieldExclamation} from 'lib/icons'
+import {FontAwesomeIcon} from '@fortawesome/react-native-fontawesome'
+import {FontAwesomeIconStyle} from '@fortawesome/react-native-fontawesome'
+
+export const LabelsBtn = observer(function LabelsBtn({
+  labels,
+  onChange,
+}: {
+  labels: string[]
+  onChange: (v: string[]) => void
+}) {
+  const pal = usePalette('default')
+  const store = useStores()
+
+  return (
+    <Button
+      type="default-light"
+      testID="labelsBtn"
+      style={styles.button}
+      accessibilityLabel="Content warnings"
+      accessibilityHint=""
+      onPress={() =>
+        store.shell.openModal({name: 'self-label', labels, onChange})
+      }>
+      <ShieldExclamation style={pal.link} size={26} />
+      {labels.length > 0 ? (
+        <FontAwesomeIcon
+          icon="check"
+          size={16}
+          style={pal.link as FontAwesomeIconStyle}
+        />
+      ) : null}
+    </Button>
+  )
+})
+
+const styles = StyleSheet.create({
+  button: {
+    flexDirection: 'row',
+    alignItems: 'center',
+    paddingHorizontal: 14,
+    marginRight: 4,
+  },
+  label: {
+    maxWidth: 100,
+  },
+})