Lucas/t 231 timebox i can create a company at the same time im creating (#140)

This PR is a bit messy:

adding graphql schema
adding create company creation on company select on People page
some frontend refactoring to be continued

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Co-authored-by: Charles Bochet <charles@twenty.com>

.vscode/extensions.json

@@ -1,6 +1,7 @@
 {
   "recommendations": [
     "ms-vscode-remote.remote-containers",
-    "ms-vscode.makefile-tools"
+    "ms-vscode.makefile-tools",
+    "dbaeumer.vscode-eslint"
   ]
 }