feat: follow XDG spec on linux/mac and use windows known folders for config and logs

[kalvinnchau]

migrate to using etcetera to handle config/log/state files to follow XDG when on MacOS/Linux and use Windows known folders on windows

• use etcetera crate which allows us to use XDG on mac, and support known windows folders

tl;dr table mapping changes for macos/linux

name	new location	old location	changed?
config.yaml	~/.config/goose/config.yaml	~/.config/goose/config.yaml	❌
sessions	~/.local/share/goose/sessions	~/.config/goose/sessions/	✅
goose.log	~/.local/state/goose/logs/goose.log	~/.config/goose/logs/goose.log	✅
goose-cli logs	~/.local/state/goose/logs/cli/*	~/.config/goose/logs/cli/*	✅
goose-server logs	~/.local/state/goose/logs/server/*	~/.config/goose/logs/server/*	✅
computer_controller	~/.cache/goose/computer_controller	$HOME/Library/Caches	✅
developer (goosehints)	~/.config/goose/.goosehints	~/.config/goose/.goosehints	❌
memory	~/.config/goose/memory	~/.config/goose/memory	❌

• Use XDG_STATE_HOME for logs
  • "The $XDG_STATE_HOME contains state data that should persist between (application) restarts, but that is not important or portable enough to the user "
• Use XDG_DATA_HOME for session files

Windows, where ~ == C:\Users\$USERNAME\:

name	location
config.yaml	~\AppData\Roaming\Block\goose\config\config.yaml
sessions	~\AppData\Roaming\Block\goose\data\sessions\*
goose.log	~\AppData\Roaming\Block\goose\logs\data\goose.log
goose-cli logs	~\AppData\Roaming\Block\goose\data\logs\cli\*
goose-server logs	~\AppData\Roaming\Block\goose\data\logs\server\*
computer_controller	~\AppData\Local\Block\goose\cache\computer_controller\
developer (goosehints)	~\AppData\Roaming\Block\goose\config\.goosehints
memory	~\AppData\Roaming\Block\goose\config\memory

---

• remove use dirs crate since it does not allow forcing the use of XDG on mac, and we want to keep XDG on mac
• move most logging/state files out of ~/.config and into STATE/DATA dirs
• Windows has no state_dir and we fallback to data_dir in that case
• update once_cell to be the same version across all crates
• make APP_STRATEGY static per crate, which allows us to rip out crates easier in the future
• keep existing fallback /tmp/.config relative where it exists

resolves #1049

[kalvinnchau]

added support for legacy sessions at ~/.config/goose/sessions

• it always checks the new location first ~/.local/share/goose/sessions, so in a name collision the new location wins
• if resuming from an older session, it will re-write back to that same session path
• resume from latest will only look in the legacy path if there are no sessions in the new path

[salman1993]

this looks great! we'll probably wanna rebase after merging #880 (the Windows PR has been waiting for some time)