Add graphQL corpus management logic

* Add fragments, queries, mutations, resolvers

Fix broken pipeline

* Rebase to main
* Update import paths
* Run linters

Remove uneeded queries and fragments

* Remove queries from earlier proof of concept

Push missing commit

Remove fragments

Remove unused cursor

ee/app/assets/javascripts/security_configuration/corpus_management/graphql/mutations/delete_corpus.mutation.graphql

+mutation deleteCorpus($projectPath: ID!, $name: String!) {
+  deleteCorpus(projectPath: $projectPath, name: $name) @client {
+    errors
+  }
+}

ee/app/assets/javascripts/security_configuration/corpus_management/graphql/queries/get_corpuses.query.graphql

+query getCorpuses($projectPath: ID!) {
+  mockedPackages(projectPath: $projectPath) @client {
+    data
+    totalSize
+  }
+}

ee/app/assets/javascripts/security_configuration/corpus_management/graphql/resolvers/resolvers.js

+import produce from 'immer';
+import getCorpusesQuery from 'ee/security_configuration/corpus_management/graphql/queries/get_corpuses.query.graphql';
+import { corpuses } from 'ee_jest/security_configuration/corpus_management/mock_data';
+
+export default {
+  Query: {
+    /* eslint-disable no-unused-vars */
+    mockedPackages(_, { projectPath }) {
+      return {
+        // Mocked data goes here
+        totalSize: 20.45e8,
+        data: corpuses,
+        __typename: 'MockedPackages',
+      };
+    },
+  },
+  Mutation: {
+    deleteCorpus: (_, { name, projectPath }, { cache }) => {
+      const sourceData = cache.readQuery({
+        query: getCorpusesQuery,
+        variables: { projectPath },
+      });
+
+      const data = produce(sourceData, (draftState) => {
+        const mockedCorpuses = draftState.mockedPackages;
+        // Filter out deleted corpus
+        mockedCorpuses.data = mockedCorpuses.data.filter((corpus) => {
+          return corpus.name !== name;
+        });
+        // Re-compute total file size
+        mockedCorpuses.totalSize = mockedCorpuses.data.reduce((totalSize, corpus) => {
+          return totalSize + corpus.size;
+        }, 0);
+      });
+
+      cache.writeQuery({ query: getCorpusesQuery, data, variables: { projectPath } });
+    },
+  },
+};