feat: copy connection URL from connection card menu (#22)

Add 'Copy connection URL' (with password, fetched from the OS keychain on
demand) and 'Copy connection URL (no password)' to the connection card kebab
menu. Builds postgresql://, mysql://, sqlite://, redis:// strings with
percent-encoded credentials and the PG sslmode appended. Bump to v0.7.10.

package.json

@@ -1,7 +1,7 @@
 {
     "name": "gridline",
     "private": true,
-    "version": "0.7.9",
+    "version": "0.7.10",
     "description": "An open-source, high-performance database GUI client for PostgreSQL and beyond",
     "type": "module",
     "scripts": {