Reorganising the repository - external renames and moves (#4074)

* Adding first rough ouline of the repository structure

* Remove old CI stuff

* add title

* formatting fixes

* move node-exits job's script to scripts dir

* Move docs into subdir

* move to bin

* move maintainence scripts, configs and helpers into its own dir

* add .local to ignore

* move core->client

* start up 'test' area

* move test client

* move test runtime

* make test move compile

* Add dependencies rule enforcement.

* Fix indexing.

* Update docs to reflect latest changes

* Moving /srml->/paint

* update docs

* move client/sr-* -> primitives/

* clean old readme

* remove old broken code in rhd

* update lock

* Step 1.

* starting to untangle client

* Fix after merge.

* start splitting out client interfaces

* move children and blockchain interfaces

* Move trie and state-machine to primitives.

* Fix WASM builds.

* fixing broken imports

* more interface moves

* move backend and light to interfaces

* move CallExecutor

* move cli off client

* moving around more interfaces

* re-add consensus crates into the mix

* fix subkey path

* relieve client from executor

* starting to pull out client from grandpa

* move is_decendent_of out of client

* grandpa still depends on client directly

* lemme tests pass

* rename srml->paint

* Make it compile.

* rename interfaces->client-api

* Move keyring to primitives.

* fixup libp2p dep

* fix broken use

* allow dependency enforcement to fail

* move fork-tree

* Moving wasm-builder

* make env

* move build-script-utils

* fixup broken crate depdencies and names

* fix imports for authority discovery

* fix typo

* update cargo.lock

* fixing imports

* Fix paths and add missing crates

* re-add missing crates

substrate/.maintain/ensure-deps.sh

@@ -0,0 +1,61 @@
+#!/usr/bin/env bash
+
+# The script is meant to check if the rules regarding packages
+# dependencies are satisfied.
+# The general format is:
+# [top-lvl-dir]<[crate-name-prefix]
+
+# For instance no crate within `./client` directory
+# is allowed to import any crate with a directory path containing `paint`.
+# Such rule is just: `client<paint`.
+
+# The script should be run from the main repo directory!
+
+set -u
+
+PLEASE_DONT=(
+	"client<paint"
+	"client<node"
+	"paint<node"
+	"paint<client"
+	"primitives<paint"
+	"primitives<client"
+)
+
+VIOLATIONS=()
+PACKAGES=()
+
+for rule in "${PLEASE_DONT[@]}"
+do
+	from=$(echo $rule | cut -f1 -d\<)
+	to=$(echo $rule | cut -f2 -d\<)
+
+	cd $from
+	echo "Checking rule $rule"
+	packages=$(find -name Cargo.toml | xargs grep -wn "path.*$to")
+	has_references=$(echo -n $packages | wc -c)
+	if [ "$has_references" != "0" ]; then
+		VIOLATIONS+=("$rule")
+		# Find packages that violate:
+		PACKAGES+=("$packages")
+	fi
+	cd - > /dev/null
+done
+
+# Display violations and fail
+I=0
+for v in "${VIOLATIONS[@]}"
+do
+	cat << EOF
+
+===========================================
+======= Violation of rule: $v
+===========================================
+${PACKAGES[$I]}
+
+
+EOF
+	I=$I+1
+done
+
+exit ${#VIOLATIONS[@]}