Implement ModelReader trait (#1131) #3468

Job	Run time
clippy	4m 5s
dojo-core-test	6m 51s
dojo-defi-test	7m 57s
docs	3m 54s
dojo-erc-test	19m 20s
dojo-primitive-test	7m 15s
dojo-spawn-and-move-example-test	4m 45s
fmt	42s
test	8m 57s
ensure-wasm	1m 3s
test-hurl	1m 56s
	1h 6m 45s

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