feat: Add rebrand CI/CD workflows to main branch

- Add 72 rebrand workflow files (polkadot→pezkuwi, substrate→bizinikiwi, cumulus→pezcumulus)
- Add GitHub actions, issue templates, and configs
- Removed unnecessary workflows (fork-sync, gitspiegel, upstream-tracker, sync-templates, backport)
- Renamed zombienet test files to match new naming convention

.github/scripts/check-missing-readme-generation.sh

@@ -0,0 +1,36 @@
+#!/usr/bin/env bash
+echo "Running script relative to `pwd`"
+# Find all README.docify.md files
+DOCIFY_FILES=$(find . -name "README.docify.md")
+
+# Initialize a variable to track directories needing README regeneration
+NEED_REGENERATION=""
+
+for file in $DOCIFY_FILES; do
+  echo "Processing $file"
+  
+  # Get the directory containing the docify file
+  DIR=$(dirname "$file")
+  
+  # Go to the directory and run cargo build
+  cd "$DIR"
+  cargo check --features generate-readme || { echo "Readme generation for $DIR failed. Ensure the crate compiles successfully and has a `generate-readme` feature which guards markdown compilation in the crate as follows: https://docs.rs/docify/latest/docify/macro.compile_markdown.html#conventions." && exit 1; }
+  
+  # Check if README.md has any uncommitted changes
+  git diff --exit-code README.md
+  
+  if [ $? -ne 0 ]; then
+    echo "Error: Found uncommitted changes in $DIR/README.md"
+    NEED_REGENERATION="$NEED_REGENERATION $DIR"
+  fi
+  
+  # Return to the original directory
+  cd - > /dev/null
+done
+
+# Check if any directories need README regeneration
+if [ -n "$NEED_REGENERATION" ]; then
+  echo "The following directories need README regeneration:"
+  echo "$NEED_REGENERATION"
+  exit 1
+fi