feat(repo): support search repository by topic name (#4505)

* feat(repo): support search repository by topic name

models/fixtures/repo_topic.yml

@@ -9,3 +9,11 @@
 -
   repo_id: 1
   topic_id: 3
+
+-
+  repo_id: 33
+  topic_id: 1
+
+-
+  repo_id: 33
+  topic_id: 4

models/fixtures/repository.yml

@@ -407,3 +407,25 @@
   lower_name: utf8
   name: utf8
   is_private: false
+
+-
+  id: 34
+  owner_id: 21
+  lower_name: golang
+  name: golang
+  is_private: false
+  num_stars: 0
+  num_forks: 0
+  num_issues: 0
+  is_mirror: false
+
+-
+  id: 35
+  owner_id: 21
+  lower_name: graphql
+  name: graphql
+  is_private: false
+  num_stars: 0
+  num_forks: 0
+  num_issues: 0
+  is_mirror: false

models/fixtures/topic.yml

@@ -1,7 +1,7 @@
 -
   id: 1
   name: golang
-  repo_count: 1
+  repo_count: 2
 
 -
   id: 2
@@ -11,3 +11,7 @@
 - id: 3
   name: SQL
   repo_count: 1
+
+- id: 4
+  name: graphql
+  repo_count: 1

models/fixtures/user.yml

@@ -314,3 +314,18 @@
   avatar_email: user20@example.com
   num_repos: 4
   is_active: true
+
+-
+  id: 21
+  lower_name: user21
+  name: user21
+  full_name: User 21
+  email: user21@example.com
+  passwd: 7d93daa0d1e6f2305cc8fa496847d61dc7320bb16262f9c55dd753480207234cdd96a93194e408341971742f4701772a025a # password
+  type: 0 # individual
+  salt: ZogKvWdyEx
+  is_admin: false
+  avatar: avatar21
+  avatar_email: user21@example.com
+  num_repos: 2
+  is_active: true