Add Botanical Encyclopedia app for browsing knowledge about plants (#96652)

## About The Pull Request

The app comes pre-installed on all botanist PDAs and can be manually
installed by anyone on any device.

I extracted the seed extractor UI into a seed table component that the
botanical encyclopedia now also uses.

I also made the seed extractor Scrap and Take buttons separate instead
of sharing a button with a toggle.

I'm not great at UI work so expect some rough edges and bugs. It does
work in testing.

Video of me testing the botanical encyclopedia:
https://streamable.com/um3yul

Video of me testing the seed extractor: https://streamable.com/5fn3ll
## Why It's Good For The Game

It allows players to access plant information without code-diving or
using the wiki.
## Changelog
🆑
add: Added Botanical Encyclopedia app for browsing knowledge about
plants, which comes pre-installed on all botanist PDAs.
/🆑

code/modules/modular_computers/computers/item/role_tablet_presets.dm

@@ -326,6 +326,9 @@
 	icon_state = "/obj/item/modular_computer/pda/botanist"
 	greyscale_config = /datum/greyscale_config/tablet/stripe_thick
 	greyscale_colors = "#50E193#E26F41#71A7CA"
+	starting_programs = list(
+		/datum/computer_file/program/botanical_encyclopedia
+	)
 
 /obj/item/modular_computer/pda/cook
 	name = "cook PDA"