New episodes were no longer published on some platforms: the item guid was no longer set for new
episodes.

- clarify distiction between the announcement post and the show notes
- change "note" occurences in UI by "post"
- show warning message explaining why the podcaster should fill the message area
- the podcaster
can choose to publish the episode with an empty message anyways
- redirect user to episode
dashboard with error message when episode publication pages are inaccessible instead of showing a
404 error
- add a cancel publication button in publish-edit form when episode is scheduled

closes #129

change Database connection import with db_connect helper

fix signature regex

update php dependencies

update types and some remap logic

fix some style issues

When first visiting the home page, users would see an error message that was normal because Castopod
Host wasn't installed yet. From now on, the error is caught to redirect users directly to install
page, preventing them seeing the error and thus, resulting in a better user experience.

fix episode, podcast and persons forms + episode scheduling

- fix: set mediaBaseURL as baseURL if not defined
- update dev documentation seting up a dev environment

- 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

update composer dependencies

- fix lazy loading properties + podcast import controller
- rename all snake_case variables to
camelCase
- fix broken routes
- refactor Location construction logic and setters

- 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

As there is currently no info on the dashboard, it is unnecessary for now

- authenticated pages are not cached
- add AnalyticsTrait to register a podcast webpage hit across
mutliple controllers
- set actor_id as unique in podcasts table
- fix issues with preview card not appearing
- update codeigniter4-uuid

add missing locale to category_options cache name

- add page hit on podcast activity page
- update development docs

fixes #100

remove undefined "my-podcasts" route

closes #5, #86

- add "ActivityPub" library to handle server to server federation and basic
  client to server protocols using activitypub:
  - add webfinger endpoint to look for actor
  - add actor definition with inbox / outbox / followers
  - remote follow an actor
  - create notes with possible preview cards
  - interract with favourites, reblogs and replies
  - block incoming actors and/or domains
  - broadcast/schedule activities to fediverse followers using a cron task
- For castopod, the podcast is the actor:
  - overwrite the activitypub library for castopod's specific needs
  - perform basic interactions administrating a podcast to interact with fediverse users:
    - create notes with episode attachment
    - favourite and share a note + reply
    - add specific castopod_namespaces for podcasts and episodes definitions
- overwrite CodeIgniter's Route service to include alternate-content option for
  activitystream requests
- update episode publication logic:
  - remove publication inputs in create / edit episode form
  - publish / schedule or unpublish an episode after creation
  - the podcaster publishes a note when publishing an episode
- Javascript / Typescript modules:
  - fix Dropdown.ts to keep dropdown menu in foreground
  - add Modal.ts for funding links modal
  - add Toggler.ts to toggle various css states in ui
- User Interface:
  - update tailwindcss to v2
  - use castopod's pine and rose colors
  - update public layout to a 3 column layout
  - add pages in public for podcast activity, episode list and notes
  - update episode page to include linked notes
  - remove previous and next episodes from episode pages
  - show different public views depending on whether user is authenticated or not
  - use Kumbh Sans and Montserrat fonts
- update CodeIgniter's config files
- with CodeIgniter's new requirements, update docker environments are now based on
  php v7.3 image
- move Image entity to Libraries
- update composer and npm packages to latest versions

closes #69 #65 #85, fixes #51 #91 #92 #88