Format schema.json on generate (#294)

Add rule to format JSON Schema with prettier

---------

Signed-off-by: Alexis Rico <sferadev@gmail.com>

Makefile

@@ -1,5 +1,9 @@
 .PHONY: generate
 generate:
+	# Format JSON schema
+	docker run --rm -v $$PWD/schema.json:/mnt/schema.json node:alpine npx prettier /mnt/schema.json --parser json --tab-width 2 --single-quote --trailing-comma all --no-semi --arrow-parens always --print-width 120 > schema.json.tmp
+	mv schema.json.tmp schema.json
+
 	# Generate the types from the JSON schema
 	docker run --rm -v $$PWD/schema.json:/mnt/schema.json omissis/go-jsonschema:0.14.1 --only-models -p migrations --tags json /mnt/schema.json > pkg/migrations/types.go
 	

schema.json

@@ -155,11 +155,11 @@
         {
           "required": ["up", "down"],
           "oneOf": [
-            {"required": ["check"]},
-            {"required": ["type"]},
-            {"required": ["nullable"]},
-            {"required": ["unique"]},
-            {"required": ["references"]}
+            { "required": ["check"] },
+            { "required": ["type"] },
+            { "required": ["nullable"] },
+            { "required": ["unique"] },
+            { "required": ["references"] }
           ],
           "not": {
             "required": ["name"]
@@ -169,13 +169,13 @@
           "required": ["name"],
           "not": {
             "anyOf": [
-              { "required": [ "up" ] },
-              { "required": [ "down" ] },
-              { "required": [ "check" ] },
-              { "required": [ "type" ] },
-              { "required": [ "nullable" ] },
-              { "required": [ "unique" ] },
-              { "required": [ "references" ] }
+              { "required": ["up"] },
+              { "required": ["down"] },
+              { "required": ["check"] },
+              { "required": ["type"] },
+              { "required": ["nullable"] },
+              { "required": ["unique"] },
+              { "required": ["references"] }
             ]
           }
         }