Add license files to all published crates (#4828)

# Objective

Add our licenses to every published crate

Fixes #4719

## Solution

- Copy licenses to every crate before publishing

tools/publish.sh

@@ -39,13 +39,29 @@ crates=(
     bevy_dylib
 )
 
-cd crates
+if [ -n "$(git status --porcelain)" ]; then
+    echo "You have local changes!"
+    exit 1
+fi
+
+pushd crates
+
 for crate in "${crates[@]}"
 do
   echo "Publishing ${crate}"
-  (cd "$crate"; cargo publish --no-verify)
+  cp ../docs/LICENSE-MIT "$crate"
+  cp ../docs/LICENSE-APACHE "$crate"
+  pushd "$crate"
+  git add LICENSE-MIT LICENSE-APACHE
+  cargo publish --no-verify --allow-dirty
+  popd
   sleep 20
 done
 
-cd ..
-cargo publish
+popd
+
+echo "Publishing root crate"
+cargo publish --allow-dirty
+
+echo "Cleaning local state"
+git reset HEAD --hard