meta: Don't exclude 'loophole' or 'pegjs' packages

We need these when typing a "tab" character in a document or file.

(Without 'loophole' and 'pegjs' in the app bundle,
'snippets' tries and fails to require() those packages,
and it errors out every time you type a tab character.)

Explanation:

Our PegJS files _aren't_ pre-compiled at the moment.
We removed the old build scripts that used to transpile these files
during the build, and without replacing that functionality yet.

So...

When a certain PegJS --> JS file isn't available in the 'snippets'
package (because it hasn't been transpiled to plain JS yet yet),
'snippets' require()s some modules that let it live-transpile
the needed code, or at least that's what I think it's doing
in that scenario.

If the modules it conditionally require()s in that scenario aren't
in the Pulsar bundle, due to being explicitly excluded, then we get a
require() error, since they legitimately aren't in the bundle.

script/electron-builder.js

@@ -94,9 +94,9 @@ let options = {
     "!**/deps/libgit2",
     "!**/node_modules/spellchecker/vendor/hunspell/.*",
     // These are only required in dev-mode, when pegjs grammars aren't precompiled
-    "!node_modules/loophole",
-    "!node_modules/pegjs",
-    "!node_modules/.bin/pegjs",
+      // "!node_modules/loophole", // Note: We do need these packages. Because our PegJS files _aren't_ all pre-compiled.
+      // "!node_modules/pegjs",    // Note: if these files are excluded, 'snippets' package breaks.
+      // "!node_modules/.bin/pegjs",
     // node_modules of the fuzzy-native package are only required for building it
     "!node_modules/fuzzy-native/node_modules",
     // Ignore *.cc and *.h files from native modules