Speed up recompilation by breaking a compile-time cycle

Recompilation speedup: Pleroma.Web.get_api_routes/0 --> Pleroma.Web.Router.get_api_routes/0

See merge request pleroma/pleroma!3419

SimplePolicy: filter nested objects, fixes #2582

Closes #2582

See merge request pleroma/pleroma!3376

gitignore runtime.exs

See merge request pleroma/pleroma!3407

Switch to aliasing `Router.Helpers` instead of importing

See merge request pleroma/pleroma!3409

Put Plugs in runtime mode in :dev, :test to speed up recompilation

See merge request pleroma/pleroma!3411

Reduce recompilation time by breaking compile-time cycles

Recompilation speedup: move StaticFEPlug to a pipeline

See merge request pleroma/pleroma!3417

Recompilation speedup: don't make MediaProxy be a compile-dep of Router

See merge request pleroma/pleroma!3418

Speeds up recompilation by removing MediaProxy as a compile-time dep of Router

Speed up recompilation by breaking a cycle. Removes StaticFEPlug as a compile-time dep of Router.

Add missing totalItems field for featured collections

See merge request pleroma/pleroma!3416

Expose user email address to user/owner; not publicly.

See merge request pleroma/pleroma!3412

Switch from the deprecated "use Mix.config" to "import Config"

See merge request pleroma/pleroma!3413

Clarify AttachmentMetadata changes

See merge request pleroma/pleroma!3408

Upload filter for media metadata (Support blurhash, get WxH)

See merge request pleroma/pleroma!3404

eblurhash:magick uses "convert"
Fetching image metadata uses "mogrify"

Save ~10 minutes on source installation

See merge request pleroma/pleroma!3406

old query:

Delete on hashtags  (cost=5089.81..5521.63 rows=6160 width=18)
   ->  Hash Semi Join  (cost=5089.81..5521.63 rows=6160 width=18)
         Hash Cond: (hashtags.id = ht.id)
         ->  Seq Scan on hashtags  (cost=0.00..317.28 rows=17528 width=14)
         ->  Hash  (cost=5012.81..5012.81 rows=6160 width=20)
               ->  Merge Anti Join  (cost=0.70..5012.81 rows=6160 width=20)
                     Merge Cond: (ht.id = hto.hashtag_id)
                     ->  Index Scan using hashtags_pkey on hashtags ht  (cost=0.29..610.53 rows=17528 width=14)
                     ->  Index Scan using hashtags_objects_pkey on hashtags_objects hto  (cost=0.42..3506.48 rows=68158 width=14)

new query:

Delete on hashtags ht  (cost=0.70..5012.81 rows=6160 width=12)
   ->  Merge Anti Join  (cost=0.70..5012.81 rows=6160 width=12)
         Merge Cond: (ht.id = hto.hashtag_id)
         ->  Index Scan using hashtags_pkey on hashtags ht  (cost=0.29..610.53 rows=17528 width=14)
         ->  Index Scan using hashtags_objects_pkey on hashtags_objects hto  (cost=0.42..3506.48 rows=68158 width=14)