feat: Implement Pipeline support

Adds support for pipelines, allowing streams to be chained together and
transformed.
This includes new types for `PipeStream` and `SourceAdapter`, along with
modifications
to the `Environment` to manage pipeline execution. A new example
`pipeline.myc`
demonstrates its usage.

examples/pipeline.myc

@@ -0,0 +1,23 @@
+;; Output: (does not matter)
+
+(do
+  (def src1 (create-random-ohlc 42 3))
+  
+  (def combined 
+    (pipe [src1]
+      (fn [t1]
+        (.close t1)
+      )
+    )
+  )
+
+  (def my_indicator
+    (pipe [combined]
+      (fn [close_price]
+        (+ close_price 10.0)
+      )
+    )
+  )
+  
+  my_indicator
+)