fix some style issues

- update .devcontainer settings: remove auto-formatting
for php + set intelephense as default formatter
- remove prettier php plugin as it lacks php 8 support
- add captain hook action for checking style pre-commit
- fix style with ecs on all files except views

- move and refactor Image.php from Libraries to Entities folder
- update some database field names
/ types
- update composer packages

- update CI process to include quality stage (tests + code review)
- add captainhook to install git pre-commit & pre-push hooks
- remove .devcontainer Dockerfile to use project's docker-compose services: all
services can now be started automatically using vscode
- update docs/setup-development.md

add missing locale to category_options cache name

feat: rename ?s to ?_from to match podcastindex recommendation
feat: adust map height
feat: display pie chart on 1 column for small and medium screens
feat: handle empty rss user agent
fix: correct bug when importing episode with empty image
fix: add service to FakePodcastsAnalyticsSeeder, resize pie charts so that all lines fit
fix: set page title to ->title when it exists
fix: replace %20 with +

closes #37

- merge publication date fields into one field instanciated with flatpickr datetime picker
- get user timezone to convert user publication_date input to UTC
- remove setPublishedAt() method from episode entity
- add publication pill component to display the episode publication date info
- clear cache after episode insert
- use CI is_really_writable() helper in install instead of is_writable()
- fix latest episodes layout
- update tsconfig to only include ts folders
- update DEPENDENCIES.md to include flatpickr
- add format_duration helper to format episode enclosure duration instead of translating it (causes
translation bug)
- add Time.ts module to convert UTC time to user localized time for episode publication dates
- fix some layout issues
- update php and js dependencies to latest versions

closes #47

BREAKING CHANGE: analytics_podcasts_by_player table and analytics_podcasts procedure were updated

- add .editorconfig file
- format all files to comply with castopod's coding style
- switch parsedown dependency with commonmark library to better follow commonmark spec for markdown
- add prettier command to format all project files at once

closes #16

- overwrite myth/auth config with castopod app needs
- create custom views for users authentication
- add admin area bootstrapped by admin controller
- shift podcast and episodes crud to admin area
- reorganize view layouts
- update docs for database migration
- add myth-auth to DEPENDENCIES.md

closes #11

- refactor episode, podcast and category entities to add dynamic properties
- refactor Routes when adding feed route
- update migration files to better fit itunes' and rss' specs
- update podcast and episode forms
- add SimpleRSSElement class to Libraries
- add rss_helper
- update home controller to redirect if system has only one podcast