Bump electron to latest possible version, with "native" Superstring

[mauricioszabo]

Related to: #484

Basically, the same code except that we're now using the native version of Superstring. This is to avoid slowdowns on files with too many lines.

Basically, this brings the time to a KeyDown event on files with 15k lines from 80ms (WASM Superstring) to 10ms (Native, this PR)

Currently, Electron 27.0.0

Bugs I found:

• CTags is not context-aware
• GitHub package is not working on this version
• No terminal package will work (possible fix: Context-aware node-pty Spiker985/x-terminal-reloaded#41)
• Spellchecker is also not context-aware
• Tree-view doesn't delete files for some reason
• Hydrogen is not working
• Some errors on keymaps - Uncaught TypeError: Cannot read properties of undefined (reading '0')

Update on keymap error - fixed via pulsar-edit/atom-keymap@3a9a9b4

With NAPI superstring, I also found this error on line 231 of autocomplete-plus/lib/subsequence-provider.js:

Uncaught (in promise) TypeError: Cannot set property score of #<SubsequenceMatch> which has only a getter
    at bufferResultsToSuggestions (/home/mauricio/projects/pulsar_repos/autocomplete-plus/lib/subsequence-provider.js:231:27)
    at async Promise.all (index 2)
bufferResultsToSuggestions @ /home/mauricio/projects/pulsar_repos/autocomplete-plus/lib/subsequence-provider.js:231
Promise.then (async)
getSuggestionsFromProviders @ /home/mauricio/projects/pulsar_repos/autocomplete-plus/lib/autocomplete-manager.js:354
findSuggestions @ /home/mauricio/projects/pulsar_repos/autocomplete-plus/lib/autocomplete-manager.js:250
autocomplete-plus:activate @ /home/mauricio/projects/pulsar_repos/autocomplete-plus/lib/autocomplete-manager.js:223
handleCommandEvent @ /home/mauricio/projects/pulsar_repos/pulsar/src/command-registry.js:405
dispatchCommandEvent @ /home/mauricio/projects/pulsar_repos/pulsar/node_modules/atom-keymap/src/keymap-manager.js:926
handleKeyboardEvent @ /home/mauricio/projects/pulsar_repos/pulsar/node_modules/atom-keymap/src/keymap-manager.js:671
handleDocumentKeyEvent @ /home/mauricio/projects/pulsar_repos/pulsar/src/window-event-handler.js:153

This probably can be solved by not re-setting the score at the builtin provider, or making a clone (which we probably should be doing anyway)