Subteams data on the team member page (keybase#22623)

* subteams not in

* in teams too

* make testable, fix bugs

* danny feedback

* eslint

* stories

* jzila feedback

shared/constants/teams.tsx

@@ -813,6 +813,26 @@ export const getCanPerform = (state: TypedState, teamname: Types.Teamname): Type
 export const getCanPerformByID = (state: TypedState, teamID: Types.TeamID): Types.TeamOperations =>
   deriveCanPerform(state.teams.teamRoleMap.roles.get(teamID))
 
+export const getSubteamsInNotIn = (state: TypedState, teamID: Types.TeamID, username: string) => {
+  const subteamsAll = getTeamDetails(state, teamID).subteams
+  let subteamsNotIn: Array<Types.TeamMeta> = []
+  let subteamsIn: Array<Types.TeamMeta> = []
+  subteamsAll.forEach(subteamID => {
+    const subteamDetails = getTeamDetails(state, subteamID)
+    const subteamMeta = getTeamMeta(state, subteamID)
+    const memberInSubteam = subteamDetails.members.has(username)
+    if (memberInSubteam) {
+      subteamsIn.push(subteamMeta)
+    } else {
+      subteamsNotIn.push(subteamMeta)
+    }
+  })
+  return {
+    subteamsIn,
+    subteamsNotIn,
+  }
+}
+
 // Don't allow version to roll back
 export const ratchetTeamVersion = (newVersion: Types.TeamVersion, oldVersion?: Types.TeamVersion) =>
   oldVersion