chore: import upstream snapshot with attribution

ruby/vosk.gemspec

@@ -0,0 +1,41 @@
+# frozen_string_literal: true
+
+require_relative "lib/vosk/version"
+
+Gem::Specification.new do |spec|
+  spec.name = "vosk"
+  spec.version = Vosk::VERSION
+  spec.authors = ["Alpha Cephei Inc", "Vladimir Ulianitsky"]
+  spec.email = ["contact@alphacphei.com", "uvlad7@gmail.com"]
+
+  spec.summary = "Offline speech recognition API"
+  spec.description =
+    "Vosk is an offline open source speech recognition toolkit. " \
+    "It enables speech recognition for 20+ languages and dialects - " \
+    "English, Indian English, German, French, Spanish, Portuguese, Chinese, Russian, Turkish, Vietnamese, " \
+    "Italian, Dutch, Catalan, Arabic, Greek, Farsi, Filipino, Ukrainian, Kazakh, Swedish, Japanese, " \
+    "Esperanto, Hindi, Czech, Polish. More to come."
+  spec.homepage = "https://alphacephei.com/vosk"
+  spec.license = "Apache-2.0"
+  spec.required_ruby_version = ">= 2.5"
+  spec.metadata["homepage_uri"] = spec.homepage
+  spec.metadata["source_code_uri"] = "https://github.com/alphacep/vosk-api"
+  spec.files = [
+    *Dir["lib/**/*.rb"], *Dir["exe/**/*"], *Dir["sig/**/*"],
+  ]
+  spec.bindir = "exe"
+  spec.executables = ["vosk-transcriber"]
+  spec.require_paths = ["lib"]
+
+  spec.add_dependency "bytesize", "~> 0.1"
+  spec.add_dependency "ffi", "~> 1.6"
+  spec.add_dependency "fileutils", "~> 1.7"
+  spec.add_dependency "httparty", "~> 0.21"
+  spec.add_dependency "progressbar", "~> 1.13"
+  spec.add_dependency "rubyzip", "~> 2.4"
+  spec.add_dependency "srt", "~> 0.1.5"
+
+  # For more information and examples about making a new gem, check out our
+  # guide at: https://bundler.io/guides/creating_gem.html
+  spec.metadata["rubygems_mfa_required"] = "true"
+end