feat: Initialize project with MySQL database and API for managing projects and technologies

- Created SQL script to set up database tables for projects and technologies.
- Added Docker Compose configuration for application and MySQL service.
- Implemented API endpoints for CRUD operations on technologies.
- Defined data types for projects and technologies.
- Established routing for API endpoints.

bd/bd.go

@@ -1,38 +1,37 @@
-package bd
-
-import (
-	"database/sql"
-	"log"
-	"os"
-
-	"github.com/go-sql-driver/mysql"
-	"github.com/joho/godotenv"
-)
-
-var db *sql.DB
-
-func GetDB() *sql.DB {
-
-	if db == nil {
-		errenv := godotenv.Load()
-		if errenv != nil {
-			log.Fatal("Error loading .env file")
-		}
-		// Capture connection properties.
-		cfg := mysql.NewConfig()
-		cfg.User = os.Getenv("DB_USER")
-		cfg.Passwd = os.Getenv("DB_PASS")
-		cfg.Net = "tcp"
-		cfg.Addr = os.Getenv("DB_HOST")
-		cfg.DBName = os.Getenv("DB_NAME")
-
-		// Get a database handle.
-		var err error
-		db, err = sql.Open("mysql", cfg.FormatDSN())
-		if err != nil {
-			log.Fatal(err)
-		}
-
-	}
-	return db
-}
+package bd
+
+import (
+	"database/sql"
+	"log"
+	"os"
+	"github.com/go-sql-driver/mysql"
+	"github.com/joho/godotenv"
+)
+
+var db *sql.DB
+
+func GetDB() *sql.DB {
+
+	if db == nil {
+		errenv := godotenv.Load()
+		if errenv != nil {
+			log.Println("No .env file found; using environment variables")
+		}
+		// Capture connection properties.
+		cfg := mysql.NewConfig()
+		cfg.User = os.Getenv("DB_USER")
+		cfg.Passwd = os.Getenv("DB_PASS")
+		cfg.Net = "tcp"
+		cfg.Addr = os.Getenv("DB_HOST")
+		cfg.DBName = os.Getenv("DB_NAME")
+
+		// Get a database handle.
+		var err error
+		db, err = sql.Open("mysql", cfg.FormatDSN())
+		if err != nil {
+			log.Fatal(err)
+		}
+
+	}
+	return db
+}