[njoubert-cleverage]

Description

Fixes #120:

• require symfony/lock (^6.4 || ^7.4 || ^8, recipe: config/packages/lock.yaml, LOCK_DSN=flock);
• demo.exclusive (New exclusive option of the process: prevent two executions of the same process at the same time process-bundle#444; its help also mentions the scheduler lock Scheduler: with several scheduler_cron workers, each due schedule is executed once per worker ui-process-bundle#266, the ignored input cleverage:process:execute: an input ignored by a process without entry_point is only logged process-bundle#461 and the "Did you mean" suggestions Error messages: give the valid values and suggest the closest code process-bundle#463);
• demo.process_launcher.stop_together (+ .child, process_launcher: the sub-processes are stopped one after the other, up to 5 seconds each process-bundle#459), demo.output.invalid_utf8 (cleverage:process:execute: invalid UTF-8 in the json-stream output file throws a JsonException process-bundle#455)), demo.generic_transformer.dashed_codes (Generic transformers: the dashes of the codes of their transformers and contextual options are replaced by underscores process-bundle#438)), demo.date.date_parser_trailing_data (date_parser: a format with "+" (trailing data allowed) is rejected since 5.7 process-bundle#447)), demo.transformer.sprintf_dynamic_width (sprintf: a width or a precision given as an argument (%*d, %.*f) is rejected since 5.7 process-bundle#449)), demo.transformer.xpath_evaluator_false (xpath_evaluator: a boolean expression whose value is false throws "Invalid xpath query: unknown error" process-bundle#436)), demo.ui.log_context_limit (Database logs: the context of a log record is not limited, a large one makes the insertion of its batch fail ui-process-bundle#271), demo.doctrine.entitymanager.batch_writer_failed_batch (DoctrineBatchWriterTask: a batch whose flush fails stays in the buffer and makes every following batch fail doctrine-process-bundle#87).

Checked in the Docker environment: each new process executed with its help: and the expected result (demo.process_launcher.stop_together with pcntl); PHPStan, PHP-CS-Fixer, Rector, the smoke test of the processes and lint:container OK.

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