Replace vendor JSON with common third parties API

The CreateVendorDialog previously loaded the entire @probo/vendors
JSON bundle client-side and used MiniSearch for fuzzy search. This
replaces it with a GraphQL query against the common_third_parties
database table, searched server-side via ILIKE filtering.

Backend: adds CommonThirdParty GraphQL type, a pkg/thirdparty
service, and a commonThirdParties(name) root query. Frontend:
splits into CommonThirdPartyCombobox (display) and an @inline
fragment read on selection via readInlineData.

Signed-off-by: Émile Ré <emile@getprobo.com>

pkg/server/api/console/v1/graphql/common_third_party.graphql

@@ -0,0 +1,34 @@
+# Copyright (c) 2026 Probo Inc <hello@getprobo.com>.
+#
+# Permission to use, copy, modify, and/or distribute this software for any
+# purpose with or without fee is hereby granted, provided that the above
+# copyright notice and this permission notice appear in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+# REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+# AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+# INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+# LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+# OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+# PERFORMANCE OF THIS SOFTWARE.
+
+type CommonThirdParty
+    @goModel(
+        model: "go.probo.inc/probo/pkg/server/api/console/v1/types.CommonThirdParty"
+    ) {
+    id: ID!
+    name: String!
+    description: String
+    category: VendorCategory!
+    websiteUrl: String
+    headquarterAddress: String
+    legalName: String
+    privacyPolicyUrl: String
+    serviceLevelAgreementUrl: String
+    dataProcessingAgreementUrl: String
+    certifications: [String!]!
+    securityPageUrl: String
+    trustPageUrl: String
+    statusPageUrl: String
+    termsOfServiceUrl: String
+}