chore(app): attempting to appease github workflows.

chore(app): bumping php version to 8.4.

feat(signal,bootstrap): deprecating `new Signal()` in favor of `Signal::create()` and fixing an issue with the spawner bootstrap which would lead it to spiral into a loop when the child process would error out in dev mode.

chore(docs): fixing typo.

chore(docs): updating store docs to use *::create() methods instead of deprecated constructors.

chore(app): tightening up sandbox project and adding ::create for Writable and Readable while deprecating the standard constructor.

chore(app): fixing docs.

chore(app): adding missing extension and imports in error management.

chore(app): fixing typo.

chore(docs): updating docs.

chore(docs): updating docs.

chore(app): tightening up some makefile scripts.

chore(docs): including missing prerequisites.

fix(core): fixing an issue where the optional --dev flag would be mapped to --environment and cause dev mode to hang.

fix(core): fixing an issue where the application would not bootstrap due to inconsistent type definitions in Bootstrap::start.