[bot] Add quantization triage bot script (#45622)

Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45622

Copied and modified from https://github.com/pytorch/pytorch/blob/master/.github/workflows/jit_triage.yml

Test Plan: Imported from OSS

Reviewed By: raghuramank100

Differential Revision: D24036142

fbshipit-source-id: 41287b6a0390cabe4474c99464d74da2c0934401

.github/workflows/quantization_triage.yml

@@ -0,0 +1,78 @@
+name: quantization-triage
+
+on:
+  issues:
+    types: [labeled]
+
+jobs:
+  welcome:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/github-script@v2
+        with:
+          github-token: ${{secrets.GITHUB_TOKEN}}
+          script: |
+            // Arguments available:
+            // - github: A pre-authenticated octokit/rest.js client
+            // - context: An object containing the context of the workflow run
+            // - core: A reference to the @actions/core package
+            // - io: A reference to the @actions/io package
+
+            // Check if issue has a Quantization label.
+            const kQuantizationLabel = "oncall: quantization";
+
+            issue = await github.issues.get({
+              owner: context.issue.owner,
+              repo: context.issue.repo,
+              issue_number: context.issue.number,
+            })
+
+            const hasQuantizationLabel = issue.data.labels.filter(label => label.name == kQuantizationLabel).length > 0;
+
+            if (!hasQuantizationLabel) {
+              core.debug("Issue " + issue.data.title + " does not have Quantization label");
+              return;
+            }
+
+            // Get project column ID.
+            const kProjectName = "Quantization Triage";
+            const kColumnName = "Need Triage";
+
+            // Query all projects in the repository.
+            // TODO: Support pagination once there are > 30 projects.
+            const projects = await github.projects.listForRepo({
+              owner: context.issue.owner,
+              repo: context.issue.repo,
+            });
+
+            // Filter out unwanted projects and get the ID for the Quantization Triage project.
+            const filteredProjects = projects.data.filter(project => project.name == kProjectName);
+
+            if (filteredProjects.length != 1) {
+              core.setFailed("Unable to find a project named " + kProjectName);
+              return;
+            }
+
+            const projectId = filteredProjects[0].id;
+            // First, query all columns in the project.
+            // TODO: Support pagination once there are > 30 columns.
+            const columns = await github.projects.listColumns({
+              project_id: projectId,
+            });
+
+            // Filter out unwanted projects and get the ID for the Need triage column.
+            const filteredColumns = columns.data.filter(column => column.name == kColumnName);
+
+            if (filteredColumns.length != 1) {
+              core.setFailed("Unable to find a column named " + kColumnName);
+              return;
+            }
+
+            const columnId = filteredColumns[0].id;
+
+            // Create a project card for this new issue.
+            await github.projects.createCard({
+              column_id: columnId,
+              content_id: issue.data.id,
+              content_type: "Issue",
+            })