Actually functional damn

What's Changed

• Feat/implement notion index by @ivanleomk in #21
• Feat/implement search by @ivanleomk in #22
• Feat/add toml config by @ivanleomk in #23
• Fix/centralised logging by @ivanleomk in #24
• Fix/clean up indexing by @ivanleomk in #25
• fix: clean up, implement ls and have logging by @ivanleomk in #26

Full Changelog: 0.2.0...0.3.0