Improve guest accounts loading, add JSONL support

src/experimental/parser/guestaccount.nim

@@ -0,0 +1,20 @@
+import jsony
+import ../types/guestaccount
+from ../../types import GuestAccount
+
+proc toGuestAccount(account: RawAccount): GuestAccount =
+  let id = account.oauthToken[0 ..< account.oauthToken.find('-')]
+  result = GuestAccount(
+    id: id,
+    oauthToken: account.oauthToken,
+    oauthSecret: account.oauthTokenSecret
+  )
+
+proc parseGuestAccount*(raw: string): GuestAccount =
+  let rawAccount = raw.fromJson(RawAccount)
+  result = rawAccount.toGuestAccount
+
+proc parseGuestAccounts*(path: string): seq[GuestAccount] =
+  let rawAccounts = readFile(path).fromJson(seq[RawAccount])
+  for account in rawAccounts:
+    result.add account.toGuestAccount