Add podspec files

Author: hanny-ph

CAtomic.podspec

@@ -0,0 +1,11 @@
+Pod::Spec.new do |spec|
+  spec.name           = 'CAtomic'
+  spec.version        = '0.3.0'
+  spec.summary        = 'A helper for generating thread-safe unique IDs.'
+  spec.homepage       = 'https://github.com/hanny-ph/swift-markdown'
+  spec.author         = { 'R&D Allm Inc.' => '' }
+  spec.swift_version  = '5.9'
+  spec.source         = { :git => 'https://github.com/hanny-ph/swift-markdown.git', :tag => spec.version.to_s }
+
+  spec.source_files   = 'Sources/CAtomic/**/*.{c,h}'
+end

Markdown.podspec

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+Pod::Spec.new do |spec|
+  spec.name           = 'Markdown'
+  spec.version        = '0.3.0'
+  spec.summary        = 'A Swift package for parsing, building, editing, and analyzing Markdown documents.'
+  spec.homepage       = 'https://github.com/hanny-ph/swift-markdown'
+  spec.author         = { 'R&D Allm Inc.' => '' }
+  spec.swift_version  = '5.9'
+  spec.source         = { :git => 'https://github.com/hanny-ph/swift-markdown.git', :tag => spec.version.to_s }
+
+  spec.source_files   = 'Sources/Markdown/**/*.swift'
+  spec.resources      = 'Sources/Markdown/**/*.md'
+
+  spec.dependency 'CAtomic'
+  spec.dependency 'cmark-gfm'
+
+  spec.test_spec do |test_spec|
+    test_spec.source_files = 'Tests/**/*.{swift}'
+  end
+end