Add Shiki code block demo app #413

Job	Run time
list-examples	3s
check-export (ag_grid_finance)	47s
check-export (azure_auth)	47s
check-export (basic_crud)	48s
check-export (chat_v2)	47s
check-export (clock)	46s
check-export (counter)	48s
check-export (customer_data_app)	48s
check-export (dalle)	48s
check-export (data_visualisation)	46s
check-export (flux-fast)	47s
check-export (form-designer)	47s
check-export (github-stats)	46s
check-export (linkinbio)	47s
check-export (local-component)	47s
check-export (lorem-stream)	44s
check-export (nba)	46s
check-export (overkey)	46s
check-export (quiz)	46s
check-export (reflexle)	46s
check-export (sales)	46s
check-export (snakegame)	30s
check-export (todo)	46s
check-export (translator)	48s
check-export (traversal)	45s
check-export (twitter)	46s
check-export (upload)	45s
	19m 56s

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