chore: source for multitask and multijoin

Author: Eddie

programs/multijoin.source

@@ -0,0 +1,4 @@
+threadOne = multitask "com.example.MultitaskRunnable" ("thread-one")
+threadTwo = multitask "com.example.MultitaskRunnable" ("thread-two")
+
+multijoin threadOne threadTwo

programs/multitask-inline.source

@@ -0,0 +1,3 @@
+multitask {
+    print "Inline thread!"
+}

programs/multitask.source

@@ -1,13 +1,2 @@
-multitask "com/example/MultitaskDemo"
-print "Hello word!"
-
-# Idea 1:
-multitask {
-    print "Inline thread!"
-}
-
-# Idea 2:
-# thread = multitask "com.example.MultitaskDemo" (firstConstructorArgument)
-
-# Idea 3:
-# multijoin(25s) threadOne threadTwo
+multitask "com.example.MultitaskRunnable"
+print "Hello"