Make an inventory of required php extensions

[norberttech]

I noticed that probably not all compoer.json files from flow packages are fully up to date, especially about the required extensions.
Those are all extensions the monorepo requires (some might not be used by any packages)

  "ext-bcmath": "*",
  "ext-dom": "*",
  "ext-hash": "*",
  "ext-json": "*",
  "ext-mbstring": "*",
  "ext-xml": "*",
  "ext-xmlreader": "*",
  "ext-xmlwriter": "*",
  "ext-zlib": "*"

We need to walk through all packages and check which one is needed by which package.

src
├── src/adapter
│   ├── src/adapter/etl-adapter-avro
│   │   ├── src/adapter/etl-adapter-avro/composer.json
│   ├── src/adapter/etl-adapter-chartjs
│   │   ├── src/adapter/etl-adapter-chartjs/composer.json
│   ├── src/adapter/etl-adapter-csv
│   │   ├── src/adapter/etl-adapter-csv/composer.json
│   ├── src/adapter/etl-adapter-doctrine
│   │   ├── src/adapter/etl-adapter-doctrine/composer.json
│   ├── src/adapter/etl-adapter-elasticsearch
│   │   ├── src/adapter/etl-adapter-elasticsearch/composer.json
│   ├── src/adapter/etl-adapter-google-sheet
│   │   ├── src/adapter/etl-adapter-google-sheet/composer.json
│   ├── src/adapter/etl-adapter-http
│   │   ├── src/adapter/etl-adapter-http/composer.json
│   ├── src/adapter/etl-adapter-json
│   │   ├── src/adapter/etl-adapter-json/composer.json
│   ├── src/adapter/etl-adapter-logger
│   │   ├── src/adapter/etl-adapter-logger/composer.json
│   ├── src/adapter/etl-adapter-meilisearch
│   │   ├── src/adapter/etl-adapter-meilisearch/composer.json
│   ├── src/adapter/etl-adapter-parquet
│   │   ├── src/adapter/etl-adapter-parquet/composer.json
│   ├── src/adapter/etl-adapter-text
│   │   ├── src/adapter/etl-adapter-text/composer.json
│   └── src/adapter/etl-adapter-xml
│       ├── src/adapter/etl-adapter-xml/composer.json
├── src/bridge
│   ├── src/bridge/filesystem
│   │   ├── src/bridge/filesystem/async-aws
│   │   │   ├── src/bridge/filesystem/async-aws/composer.json
│   │   └── src/bridge/filesystem/azure
│   │       ├── src/bridge/filesystem/azure/composer.json
│   ├── src/bridge/monolog
│   │   └── src/bridge/monolog/http
│   │       ├── src/bridge/monolog/http/composer.json
│   └── src/bridge/symfony
│       └── src/bridge/symfony/http-foundation
│           ├── src/bridge/symfony/http-foundation/composer.json
├── src/cli
│   ├── src/cli/composer.json
├── src/core
│   └── src/core/etl
│       ├── src/core/etl/composer.json
├── src/lib
│   ├── src/lib/array-dot
│   │   ├── src/lib/array-dot/composer.json
│   ├── src/lib/azure-sdk
│   │   ├── src/lib/azure-sdk/composer.json
│   ├── src/lib/doctrine-dbal-bulk
│   │   ├── src/lib/doctrine-dbal-bulk/composer.json
│   ├── src/lib/dremel
│   │   ├── src/lib/dremel/composer.json
│   ├── src/lib/filesystem
│   │   ├── src/lib/filesystem/composer.json
│   ├── src/lib/parquet
│   │   ├── src/lib/parquet/composer.json
│   ├── src/lib/parquet-viewer
│   │   ├── src/lib/parquet-viewer/composer.json
│   ├── src/lib/rdsl
│   │   ├── src/lib/rdsl/composer.json
│   └── src/lib/snappy
│       ├── src/lib/snappy/composer.json

[norberttech]

As a first step we can just put the inventory in the comment, without making any changes/adjustments in the code since there might be some improvements needed like in case of #1347