Make status mandatory

[foolip]

Let's guarantee that status exists for all features in the published package.

cc @ddbeck

[foolip]

I also think we should generate false for browsers that don't have support, so that it's clear from a single entry what the core browser set is, and what's missing if it's not Baseline.

[foolip]

I'm trying part of this in #899.

[foolip]

Burndown list based on the errors in that PR:

• anchor-positioning (Generate dist file for anchor positioning #952)
• appearance (Add appearance.dist.yml #919)
• audio-video-tracks (Add audio-video-tracks.dist.yml #877)
• background-gradients (Remove background gradients feature #957)
• baseline-source (Add baseline-source.dist.yml #920)
• calc-constants (Add calc-constants.dist.yml #950)
• calc (Add calc.dist.yml #921)
• check-visibility (Add .dist.yml for 3 CSS features #901)
• color-scheme (Generate .dist.yml for color-* #879)
• compression-streams (Add compression-streams.dist.yml #924)
• constructed-stylesheets (Add constructed-stylesheets.dist.yml #956)
• contain-intrinsic-size (Add contain-intrinsic-size.dist.yml #958)
• counter-style (Add counter-style.dist.yml #964)
• document-picture-in-picture (Add document-picture-in-picture.dist.yml #951)
• field-sizing (Add field-sizing.dist.yml #918)
• font-size-adjust (Add font-size-adjust.dist.yml #953)
• font-synthesis (Split font-synthesis into many features in a group #970)
• fullscreen (Add fullscreen.dist.yml #902)
• highlight (Add highlight.dist.yml #968)
• http11 (Add status for HTTP/1.1 #946)
• http2 (Add http2.dist.yml and http3.dist.yml #949)
• http3 (Add http2.dist.yml and http3.dist.yml #949)
• image-set (Add image-set.dist.yml #928)
• intersection-observer-v2 (Add status for IntersectionObserver v2 #874)
• intersection-observer (Add intersection-observer.dist.yml #923)
• light-dark (Add .dist.yml for 3 CSS features #901)
• line-clamp (Add a status for unprefixed line-clamp (not supported at all yet) #977)
• managed-media-source (Add managed-media-source.dist.yml #922)
• mathml (Add status for MathML, bypassing BCD entirely #976)
• media-source (Add media-source.dist.yml #978)
• min-max-clamp (Add min-max-clamp.dist.yml #980)
• modulepreload (Add modulepreload.dist.yml #981)
• navigation (Add navigation.dist.yml #982)
• picture-in-picture (Add picture-in-picture.dist.yml #983)
• pointer-lock (Add pointer-lock.dist.yml #988)
• relative-color (Add relative-color.dist.yml #998)
• sanitizer (Remove Sanitizer API #1000)
• scope (Add scope.dist.yml #1001)
• scroll-driven-animations (Add scroll-driven-animations.dist.yml #1002)
• scroll-snap (Add scroll-snap.dist.yml #1004)
• scrollend (Add scrollend.dist.yml #1005)
• search-input-type (Add search-input-type.dist.yml #1010)
• show-picker-input (Add show-picker-input.dist.yml #1011)
• slot (Split <slot> into two features and add statuses #880)
• speech-recognition (Make (prefixed) speech recognition draft #1014)
• speech-synthesis (Add speech-synthesis.dist.yml #1013)
• text-box-trim (Make text-box-trim a draft feature #1006)
• text-fragments (Split text fragments into a group with two features #1007)
• text-wrap-balance (Add .dist.yml for 3 CSS features #901)
• transforms2d (Add transforms2d.dist.yml and transforms3d.dist.yml #944)
• transforms3d (Add transforms2d.dist.yml and transforms3d.dist.yml #944)
• web-bluetooth (Manually set status for Web Bluetooth #1015)
• web-midi (Add web-midi.dist.yml #1016)
• webp (Add .dist.yml for image formats #878)

[foolip]

To make progress on line-clamp I've sent mdn/browser-compat-data#22951.