fix: updated readme and added envrc example

.envrc.example

@@ -0,0 +1,35 @@
+# Server Configuration
+export ADDR=":8080"
+export EXTERNAL_URL="localhost:8080"
+export FRONTEND_URL="http://localhost:5173"
+export ENV="development"
+export ALLOWED_ORIGINS="https://*,http://*" # TODO: Change to the actual allowed origins on production
+
+# Database Configuration
+export DB_ADDR="postgres://postgres:postgres@localhost:5432/lk_tmpl?sslmode=disable"
+export DB_MAX_OPEN_CONNS="30"
+export DB_MAX_IDLE_CONNS="30"
+export DB_MAX_IDLE_TIME="15m"
+
+# Redis Configuration
+export REDIS_ADDR="localhost:6379"
+export REDIS_PASSWORD=""
+export REDIS_DB="0"
+export REDIS_ENABLED="false"
+
+# Authentication
+export BASIC_AUTH_USERNAME="admin"
+export BASIC_AUTH_PASSWORD="admin"
+export AUTH_TOKEN_SECRET="your-secret-key-here"
+export AUTH_TOKEN_EXP="24h"
+export AUTH_TOKEN_ISS="lkapi"
+export AUTH_TOKEN_AUD="lkapi"
+
+# Email Configuration
+export FROM_EMAIL="[email protected]"
+export SENDGRID_API_KEY="your-sendgrid-api-key"
+
+# Rate Limiter
+export RATE_LIMITER_REQS_COUNT="20"
+export RATE_LIMITER_TIME_FRAME="1m"
+export RATE_LIMITER_ENABLED="true"