feature: remove external-cmd Now that telescope understands mailcap, there's no need for the use of external-cmd any longer.

ui: add capability to run external cmds When telescope encounters a file type which it cannot display it prompts the user whether they wish to save the file, or not. This patch extends this idea -- if the file is saved, then the user is prompted to run a command against that downloaded file. This controllable via the 'external-cmd' setting. It defaults to 'xdg-open'. This is based off work originally started by op@.

cmd: introduce toggle-styling This adds a new command `toggle-styling` which toggles the formatting between the defaults (or anything specified in a configuration file), and the "raw" prefixes as defined in the gemini file.

add cmd_search to search using a search engine This adds a new command `search', bound by default to `s', that prompts for a query and loads and consult the ``oracle'' (the search engine) using default_search_engine (which will be made customizable.) It also temporarly supports only gemini URLs. Feature requested by -fab-, thanks!

move includes back to the root directory Splitting stuff into sub-directories was just a big mistake.