Add CHANGELOG.md

Author: SysAdminDoc

CHANGELOG.md

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+# Changelog
+
+All notable changes to Multistreamer will be documented in this file.
+
+## [v0.1.0] - %Y->- (HEAD -> main, origin/main, origin/HEAD)
+
+- Added: Add files via upload
+- Added: Add room creation link to README
+- Changed: Update README with image and feature description
+- Added: Add files via upload
+- Changed: Update index.html
+- Added: Add files via upload