chore: add prepare scripts to packages to allow git dependency installation

Author: rjmunro

packages/blueprints-integration/package.json

@@ -15,6 +15,7 @@
 	},
 	"homepage": "https://github.com/Sofie-Automation/sofie-core/blob/main/packages/blueprints-integration#readme",
 	"scripts": {
+		"prepare": "yarn build",
 		"build": "run -T rimraf dist && run build:main",
 		"build:main": "run -T tsc -p tsconfig.build.json",
 		"lint:raw": "run -T eslint",

packages/shared-lib/package.json

@@ -15,6 +15,7 @@
 	},
 	"homepage": "https://github.com/nrkno/sofie-core/blob/master/packages/shared-lib#readme",
 	"scripts": {
+		"prepare": "yarn build",
 		"build": "run -T rimraf dist && run build:main",
 		"build:main": "run -T tsc -p tsconfig.build.json",
 		"lint:raw": "run -T eslint",