Clarify the successful Mini functional checks in the explorer

Add MLX 5-bit, floating formats and calibrated APEX including Mini

Add three APEX GGUF options to the checkpoint explorer

Align explorer with current Occamy website branding and link the paper and dataset

Add MLX 6-bit and 8-bit, local API recipes and client requests

Add Q3_K_L, Q4_0 and Q5_0 to checkpoint explorer

Add Q3_K_S and Q5_K_S to checkpoint explorer

Add Occamy checkpoint explorer with downloads and deployment recipes

initial commit