Refactored Precision -> Vector, removed AssociatedType Key

...SwiftNLP/0. SNLP Internal Protocols/SLPAsyncEncoder.swift

Sources/SwiftNLP/0. SNLP Internal Protocols/SNLPCorpus.swift

...ces/SwiftNLP/0. SNLP Internal Protocols/SNLPEncoder.swift

Sources/SwiftNLP/1. Data Collection/DictionaryCorpus.swift

Sources/SwiftNLP/1. Data Collection/HNSWCorpus.swift

.../SwiftNLP/2. Encoding/ContextFreeEncoder + File IO .swift

Sources/SwiftNLP/2. Encoding/ContextFreeEncoder.swift

Sources/SwiftNLP/2. Encoding/CoreMLEncoder.swift

Sources/SwiftNLP/2. Encoding/NatualLanguageEncoder.swift

Sources/SwiftNLP/2. Encoding/OpenAIEncoder.swift