Reverts README change to restore poetry build. (#820)

A previous change attempted to avoid our README files getting out of
sync by referencing the README at the root of the repo using a
relative path in the library pyproject.toml. This unfortunately breaks
poetry build. This commit switches back to using the README in the lib
directory, and adds a github action step to copy the README during the
release process to hopefully avoid drift that way.

.github/workflows/draft_release.yml

@@ -23,6 +23,9 @@ jobs:
       - name: Install
         run: poetry install
         working-directory: lib/sycamore
+      - name: Copy README
+        working-directory: lib/scyamore
+        run: cp ../../README.md README.md
       - name: build
         run: poetry build
         working-directory: lib/sycamore

lib/sycamore/pyproject.toml

@@ -3,7 +3,7 @@ name = "sycamore-ai"
 version = "0.1.21"
 description = "Sycamore is an LLM-powered semantic data preparation system for building search applications."
 authors = ["aryn.ai <[email protected]>"]
-readme = "../../README.md"
+readme = "README.md"
 repository = "https://github.com/aryn-ai/sycamore.git"
 packages = [{ include = "sycamore" }]