cli: add dev command for enums experiment

crates/prowocessing/src/lib.rs

@@ -7,7 +7,7 @@ use experimental::enum_based::{Instruction, PipelineBuilder};
 
 /// just some experiments, to test whether the architecture i want is even possible (or how to do it). probably temporary.
 /// Gonna first try string processing...
-mod experimental {
+pub mod experimental {
     pub mod enum_based {
         pub enum Instruction {
             Uppercase,
@@ -41,6 +41,7 @@ mod experimental {
                 }
             }
 
+            #[must_use]
             pub fn insert(mut self, instr: Instruction) -> Self {
                 self.pipeline.push(instr);
                 self
@@ -66,6 +67,12 @@ mod experimental {
                 Pipeline { pipeline: res }
             }
         }
+
+        impl Default for PipelineBuilder {
+            fn default() -> Self {
+                Self::new()
+            }
+        }
     }
 }