[Breaking] graphql: Add camelCase for add/update mutation.

[JatinDev543]

This PR Modify lowercase typename for add/update mutation to camelCase.
Fixes #5380
Fixes #GRAPHQL-448

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[MichaelJCompton]

Thank. Looks like the right idea. I'm suggesting to implement it just with some reslicing of the string, rather than taking an external dependency.

Also this'll need to fix up lots of tests. I'll pair you with someone to help you work out how to do that.

Reviewable status: 0 of 3 files reviewed, 2 unresolved discussions (waiting on @jatindevdg, @manishrjain, @MichaelJCompton, @pawanrawal, and @vvbalaji-dgraph)

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graphql/schema/gqlschema.go, line 28 at r1 (raw file):

	"github.com/vektah/gqlparser/v2/gqlerror"
	"github.com/vektah/gqlparser/v2/parser"
         "github.com/iancoleman/strcase" //Added strcase for camelCase conversion

Let's not take a dependency on another package ... I think we can just do this by to lowering only the first letter, right? spilte the string into the first letter and the rest, tolowwer the first bit, add them back together.

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graphql/schema/gqlschema.go, line 975 at r1 (raw file):

func addAddPayloadType(schema *ast.Schema, defn *ast.Definition) {
	qry := &ast.FieldDefinition{
		Name: strcase.ToLowerCamel(defn.Name), //Converting Name to lower camelCase

no need for the comment

[abhimanyusinghgaur]

Looks good, just got some minor comments related to formatting.

As this PR fixes two issues, one in GitHub and its equivalent in JIRA, the PR description should mention them like:

Fixes #5380
Fixes #GRAPHQL-448

No need to add a hyperlink explicitly.
Ans use the same PR description while doing Squash and Merge, so that the PR will automatically get linked to the issue in JIRA board.

Reviewed 10 of 12 files at r2.
Reviewable status: all files reviewed, 4 unresolved discussions (waiting on @jatindevdg, @manishrjain, @pawanrawal, and @vvbalaji-dgraph)

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graphql/schema/gqlschema.go, line 24 at r2 (raw file):

	"strings"

	"github.com/dgraph-io/dgraph/x" //Added strcase for camelCase conversion

Stale comment, need to remove.

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graphql/schema/gqlschema.go, line 1643 at r2 (raw file):

	return ok
}
func camelCase(x string) string { 

Add a new line before this function.
A new line between two functions improves readability.

[abhimanyusinghgaur]

Reviewed 1 of 1 files at r3.
Reviewable status: all files reviewed, 2 unresolved discussions (waiting on @jatindevdg, @manishrjain, @pawanrawal, and @vvbalaji-dgraph)

[pawanrawal]

:lgtm, the camecase function can be simplified a bit

Reviewable status: all files reviewed, 3 unresolved discussions (waiting on @jatindevdg, @manishrjain, and @vvbalaji-dgraph)

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graphql/schema/gqlschema.go, line 1649 at r3 (raw file):

	}

	return ((strings.ToLower(string(x[0]))) + x[1:])

The function could be simplified to

if len(x) == 0 {
  return ""
}

return strings.ToLower(x[:1]) + x[1:]

[MichaelJCompton]

Reviewable status: 9 of 10 files reviewed, 4 unresolved discussions (waiting on @abhimanyusinghgaur, @jatindevdg, @manishrjain, and @vvbalaji-dgraph)

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graphql/schema/gqlschema.go, line 24 at r2 (raw file):

	"strings"

	"github.com/dgraph-io/dgraph/x" //Added strcase for camelCase conversion

no need for this comment

[MichaelJCompton]

[breaking] graphql: ....