update CommonMark to v2 + add Autolink, SmartPunct and DisallowedRawHtml extensions

fixes #156

- tempfile uniqueness ensures that each process lives in its independent context
- add
writable/temp folder to store video clips temporary resources
- add videoClipWorkers config to
Admin for specifying the number of ffmpeg processes to run in parallel
- update video clip preview
background to better suit the end result

removing the css extension prevents having the file hijacked by the web server config

set two toggle switches to run housekeeping tasks seperately if needed

add run housekeeping button in general settings page

feat(transcript): parse srt subtitles into json file + add max file size info below audio file input

remove episode form warning + add javascript validation when uploading a file to check if it's too
big to upload

closes #134, #136

go back to form after submitting an edit form

update discord logo

update Forms.Section component to adapt to full width

feat(video-clip): generate video clips in the bg using a cron job + add video clip page + tidy up UI

fix video colors to portray exact rgb values using libx264rgb encoding + image transparency issue
when overlaying images with php gd

- configure service-worker using vite-plugin-pwa
- refactor Image entity to generate images of
different types based on size config
- add requirement for webp library for php gd to generate webp
images for instance
- add action to regenerate all instance images for eventual Images config
changes
- enhance google lighthouse metrics for pwa

- refactor meta-tags by generating them in the controller and injecting them into the views
- use
`melbahja/seo` library to build opengraph and twitter meta-tags + schema.org objects

set 6 base accent colors: pine, lake, jacaranda, crimson, amber and onyx

- set new colors using the css variables for theming in tailwind.config.js
- replace admin and
public colors with new variable enabled colors

- rename image fields on podcast, episode and persons for better clarity
- set different sizes
config for podcast cover, banner and persons avatars
- add tiny size for covers
- fix responsive
on admin forms