feat: Added enterprise rules

Signed-off-by: Steve Hipwell <steve.hipwell@gmail.com>

Author: stevehipwell

github/enterprise_rules.go

@@ -0,0 +1,93 @@
+// Copyright 2025 The go-github AUTHORS. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package github
+
+import (
+	"context"
+	"fmt"
+)
+
+// CreateEnterpriseRuleset creates a ruleset for the specified enterprise.
+//
+// GitHub API docs: https://docs.github.com/en/enterprise-cloud@latest/rest/enterprise-admin/rules#create-an-enterprise-repository-ruleset
+//
+//meta:operation POST /enterprises/{enterprise}/rulesets
+func (s *EnterpriseService) CreateEnterpriseRuleset(ctx context.Context, enterprise string, rs *Ruleset) (*Ruleset, *Response, error) {
+	u := fmt.Sprintf("enterprises/%v/rulesets", enterprise)
+
+	req, err := s.client.NewRequest("POST", u, rs)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var ruleset *Ruleset
+	resp, err := s.client.Do(ctx, req, &ruleset)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return ruleset, resp, nil
+}
+
+// GetEnterpriseRuleset gets a ruleset from the specified enterprise.
+//
+// GitHub API docs: https://docs.github.com/en/enterprise-cloud@latest/rest/enterprise-admin/rules#get-an-enterprise-repository-ruleset
+//
+//meta:operation GET /enterprises/{enterprise}/rulesets/{ruleset_id}
+func (s *EnterpriseService) GetEnterpriseRuleset(ctx context.Context, enterprise string, rulesetID int64) (*Ruleset, *Response, error) {
+	u := fmt.Sprintf("enterprises/%v/rulesets/%v", enterprise, rulesetID)
+
+	req, err := s.client.NewRequest("GET", u, nil)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var ruleset *Ruleset
+	resp, err := s.client.Do(ctx, req, &ruleset)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return ruleset, resp, nil
+}
+
+// UpdateEnterpriseRuleset updates a ruleset from the specified enterprise.
+//
+// GitHub API docs: https://docs.github.com/en/enterprise-cloud@latest/rest/enterprise-admin/rules#update-an-enterprise-repository-ruleset
+//
+//meta:operation PUT /enterprises/{enterprise}/rulesets/{ruleset_id}
+func (s *EnterpriseService) UpdateEnterpriseRuleset(ctx context.Context, enterprise string, rulesetID int64, rs *Ruleset) (*Ruleset, *Response, error) {
+	u := fmt.Sprintf("enterprises/%v/rulesets/%v", enterprise, rulesetID)
+
+	req, err := s.client.NewRequest("PUT", u, rs)
+	if err != nil {
+		return nil, nil, err
+	}
+
+	var ruleset *Ruleset
+	resp, err := s.client.Do(ctx, req, &ruleset)
+	if err != nil {
+		return nil, resp, err
+	}
+
+	return ruleset, resp, nil
+}
+
+// DeleteEnterpriseRuleset deletes a ruleset from the specified enterprise.
+//
+// GitHub API docs: https://docs.github.com/en/enterprise-cloud@latest/rest/enterprise-admin/rules#delete-an-enterprise-repository-ruleset
+//
+//meta:operation DELETE /enterprises/{enterprise}/rulesets/{ruleset_id}
+func (s *EnterpriseService) DeleteEnterpriseRuleset(ctx context.Context, enterprise string, rulesetID int64) (*Response, error) {
+	u := fmt.Sprintf("enterprises/%v/rulesets/%v", enterprise, rulesetID)
+
+	req, err := s.client.NewRequest("DELETE", u, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return s.client.Do(ctx, req, nil)
+}