[git] dependabot config, ci and tests workflows (#2)

* [build] add ci and tests workflows

* [git] add dependabot config, actions and crates.io

.github/dependabot.yml

@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "daily"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"