feat: add pr labeler workflow

Signed-off-by: Adithya Krishna <adi@documenso.com>

.github/pr-labeler.yml

@@ -0,0 +1,52 @@
+'apps: marketing':
+  - apps/marketing/**
+
+'apps: web': 
+  - apps/web/**
+
+'docker': 
+  - docker/**
+
+'scripts': 
+  - scripts/**
+
+'migrations':
+  - packages/prisma/migrations/**/migration.sql
+
+'e2e tests changes':
+  - packages/app-tests/e2e/**
+
+'pkg: assets':
+  - packages/assets/**
+
+'pkg: email':
+  - packages/email/**
+
+'pkg: eslint-config':
+  - packages/eslint-config/**
+
+'pkg: lib':
+  - packages/lib/**
+
+'pkg: prettier-config':
+  - packages/prettier-config/**
+
+'pkg: prisma':
+  - packages/prisma/**
+
+'pkg: signing':
+  - packages/signing/**
+
+'pkg: tailwind-config':
+  - packages/tailwind-config/**
+
+'pkg: trpc':
+  - packages/trpc/**
+
+'pkg: tsconfig':
+  - packages/tsconfig/**
+
+'pkg: ui':
+  - packages/ui/**
+
+