adding symfony project initial files

app/config/packages/cache.yaml

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+framework:
+    cache:
+        # Unique name of your app: used to compute stable namespaces for cache keys.
+        #prefix_seed: your_vendor_name/app_name
+
+        # The "app" cache stores to the filesystem by default.
+        # The data in this cache should persist between deploys.
+        # Other options include:
+
+        # Redis
+        #app: cache.adapter.redis
+        #default_redis_provider: redis://localhost
+
+        # APCu (not recommended with heavy random-write workloads as memory fragmentation can cause perf issues)
+        #app: cache.adapter.apcu
+
+        # Namespaced pools use the above "app" backend by default
+        #pools:
+            #my.dedicated.cache: null

app/config/packages/dev/web_profiler.yaml

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+web_profiler:
+    toolbar: true
+    intercept_redirects: false
+
+framework:
+    profiler: { only_exceptions: false }

app/config/packages/doctrine.yaml

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+doctrine:
+    dbal:
+        url: '%env(resolve:DATABASE_URL)%'
+
+        # IMPORTANT: You MUST configure your server version,
+        # either here or in the DATABASE_URL env var (see .env file)
+        #server_version: '13'
+    orm:
+        auto_generate_proxy_classes: true
+        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
+        auto_mapping: true
+        mappings:
+            App:
+                is_bundle: false
+                type: annotation
+                dir: '%kernel.project_dir%/src/Entity'
+                prefix: 'App\Entity'
+                alias: App

app/config/packages/doctrine_migrations.yaml

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+doctrine_migrations:
+    migrations_paths:
+        # namespace is arbitrary but should be different from App\Migrations
+        # as migrations classes should NOT be autoloaded
+        'DoctrineMigrations': '%kernel.project_dir%/migrations'

app/config/packages/framework.yaml

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+# see https://symfony.com/doc/current/reference/configuration/framework.html
+framework:
+    secret: '%env(APP_SECRET)%'
+    #csrf_protection: true
+    #http_method_override: true
+
+    # Enables session support. Note that the session will ONLY be started if you read or write from it.
+    # Remove or comment this section to explicitly disable session support.
+    session:
+        handler_id: null
+        cookie_secure: auto
+        cookie_samesite: lax
+
+    #esi: true
+    #fragments: true
+    php_errors:
+        log: true

app/config/packages/prod/doctrine.yaml

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+doctrine:
+    orm:
+        auto_generate_proxy_classes: false
+        metadata_cache_driver:
+            type: pool
+            pool: doctrine.system_cache_pool
+        query_cache_driver:
+            type: pool
+            pool: doctrine.system_cache_pool
+        result_cache_driver:
+            type: pool
+            pool: doctrine.result_cache_pool
+
+framework:
+    cache:
+        pools:
+            doctrine.result_cache_pool:
+                adapter: cache.app
+            doctrine.system_cache_pool:
+                adapter: cache.system

app/config/packages/prod/routing.yaml

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+framework:
+    router:
+        strict_requirements: null

app/config/packages/routing.yaml

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+framework:
+    router:
+        utf8: true
+
+        # Configure how to generate URLs in non-HTTP contexts, such as CLI commands.
+        # See https://symfony.com/doc/current/routing.html#generating-urls-in-commands
+        #default_uri: http://localhost

app/config/packages/sensio_framework_extra.yaml

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+sensio_framework_extra:
+    router:
+        annotations: false

app/config/packages/test/framework.yaml

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+framework:
+    test: true
+    session:
+        storage_id: session.storage.mock_file

app/config/packages/test/twig.yaml

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+twig:
+    strict_variables: true

app/config/packages/test/validator.yaml

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+framework:
+    validation:
+        not_compromised_password: false

app/config/packages/test/web_profiler.yaml

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+web_profiler:
+    toolbar: false
+    intercept_redirects: false
+
+framework:
+    profiler: { collect: false }

app/config/packages/twig.yaml

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+twig:
+    default_path: '%kernel.project_dir%/templates'

app/config/packages/validator.yaml

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+framework:
+    validation:
+        email_validation_mode: html5
+
+        # Enables validator auto-mapping support.
+        # For instance, basic validation constraints will be inferred from Doctrine's metadata.
+        #auto_mapping:
+        #    App\Entity\: []