feat: add react-router-dom-v5-compat (#8752)

Author: ryanflorence

.gitignore

@@ -14,4 +14,7 @@ node_modules/
 /packages/*/esm/
 /packages/*/umd/
 
+# compat module copies
+/packages/react-router-dom-v5-compat/react-router-dom
+
 .eslintcache

contributors.yml

@@ -37,6 +37,7 @@
 - paulsmithkc
 - petersendidit
 - RobHannay
+- ryanflorence
 - sanketshah19
 - sergiodxa
 - shamsup