Anvil and chain prototype

src/main/resources/assets/betterend/patterns/block/anvil.json

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+{
+	"parent": "minecraft:block/template_anvil",
+	"textures": {
+		"top": "betterend:block/%block%_top",
+		"body": "betterend:block/%block%",
+		"particle": "#body"
+	}
+}

src/main/resources/assets/betterend/patterns/block/chain.json

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+{
+	"parent": "block/chain",
+	"textures": {
+		"particle": "betterend:block/%block%",
+		"all": "betterend:block/%block%"
+	}
+}

src/main/resources/assets/betterend/patterns/blockstate/anvil.json

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+{
+	"variants": {
+		"facing=east": {
+			"model": "betterend:pattern/%block%",
+			"y": 270
+		},
+		"facing=north": {
+			"model": "betterend:pattern/%block%",
+			"y": 180
+		},
+		"facing=south": {
+			"model": "betterend:pattern/%block%"
+		},
+		"facing=west": {
+			"model": "betterend:pattern/%block%",
+			"y": 90
+		}
+	}
+}

src/main/resources/assets/betterend/patterns/blockstate/chain.json

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+{
+	"variants": {
+		"axis=x": {
+			"model": "betterend:pattern/%block%",
+			"x": 90,
+			"y": 90
+		},
+		"axis=y": {
+			"model": "betterend:pattern/%block%"
+		},
+		"axis=z": {
+			"model": "betterend:pattern/%block%",
+			"x": 90
+		}
+	}
+}