Create storage/ and var/ folders

[arshavinel]

Move statics/ and uploads/ inside this new folder storage/.

| storage/
| --- | statics/
| --- | uploads/

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Note: Inspired from Laravel 8.

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Move caches/ and errors/ inside this new folder var/.

| var/
| --- | cache/
| --- | --- | arshwell/
| --- | --- | --- | monolith/
| --- | --- | --- | --- | routes.json
| --- | --- | --- | --- | ...
| --- | log/
| --- | --- | crons.log
| --- | --- | download.log
| --- | --- | index.log

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Note: Inspired from Symfony 6.