[Refactor]: Core/API Split (#1506)

Refactors api folder to core, creates firm split between backend code and api frontend.

api/openai/list.go

@@ -1,69 +0,0 @@
-package openai
-
-import (
-	"regexp"
-
-	config "github.com/go-skynet/LocalAI/api/config"
-	"github.com/go-skynet/LocalAI/api/schema"
-	model "github.com/go-skynet/LocalAI/pkg/model"
-	"github.com/gofiber/fiber/v2"
-)
-
-func ListModelsEndpoint(loader *model.ModelLoader, cm *config.ConfigLoader) func(ctx *fiber.Ctx) error {
-	return func(c *fiber.Ctx) error {
-		models, err := loader.ListModels()
-		if err != nil {
-			return err
-		}
-		var mm map[string]interface{} = map[string]interface{}{}
-
-		dataModels := []schema.OpenAIModel{}
-
-		var filterFn func(name string) bool
-		filter := c.Query("filter")
-
-		// If filter is not specified, do not filter the list by model name
-		if filter == "" {
-			filterFn = func(_ string) bool { return true }
-		} else {
-			// If filter _IS_ specified, we compile it to a regex which is used to create the filterFn
-			rxp, err := regexp.Compile(filter)
-			if err != nil {
-				return err
-			}
-			filterFn = func(name string) bool {
-				return rxp.MatchString(name)
-			}
-		}
-
-		// By default, exclude any loose files that are already referenced by a configuration file.
-		excludeConfigured := c.QueryBool("excludeConfigured", true)
-
-		// Start with the known configurations
-		for _, c := range cm.GetAllConfigs() {
-			if excludeConfigured {
-				mm[c.Model] = nil
-			}
-
-			if filterFn(c.Name) {
-				dataModels = append(dataModels, schema.OpenAIModel{ID: c.Name, Object: "model"})
-			}
-		}
-
-		// Then iterate through the loose files:
-		for _, m := range models {
-			// And only adds them if they shouldn't be skipped.
-			if _, exists := mm[m]; !exists && filterFn(m) {
-				dataModels = append(dataModels, schema.OpenAIModel{ID: m, Object: "model"})
-			}
-		}
-
-		return c.JSON(struct {
-			Object string               `json:"object"`
-			Data   []schema.OpenAIModel `json:"data"`
-		}{
-			Object: "list",
-			Data:   dataModels,
-		})
-	}
-}