feat(users/Profpatsch): init haskell exec-helpers

Mirrors the rust exec-helpers

Change-Id: I8fba49525949a8f38ca8c215e2ec7ba9d97d3bf9
Reviewed-on: https://cl.tvl.fyi/c/depot/+/6116
Tested-by: BuildkiteCI
Reviewed-by: Profpatsch <mail@profpatsch.de>

users/Profpatsch/execline/exec-helpers.cabal

@@ -0,0 +1,14 @@
+cabal-version:      2.4
+name:               exec-helpers
+version:            0.1.0.0
+author:             Profpatsch
+maintainer:         mail@profpatsch.de
+
+library
+    exposed-modules:          ExecHelpers
+
+    build-depends:
+        base ^>=4.15.1.0,
+        my-prelude
+
+    default-language: Haskell2010