some minor changes for running oncall via grafana/irm tilt setup (#4927)

Related to the changes under `./packages/grafana-oncall-app` in
https://github.com/grafana/irm/pull/45

grafana-plugin/.bra.toml

@@ -0,0 +1,22 @@
+# default configuration created by the `mage watch` command.
+# this file can be edited and should be checked into source control.
+# see https://github.com/unknwon/bra/blob/master/templates/default.bra.toml for more configuration options.
+[run]
+init_cmds = [
+  ["mage", "-v", "build:debug"],
+  ["mage", "-v" , "reloadPlugin"]
+]
+watch_all = true
+follow_symlinks = false
+ignore = [".git", "node_modules", "dist"]
+ignore_files = ["mage_output_file.go"]
+watch_dirs = [
+  "pkg",
+  # "src",
+]
+watch_exts = [".go", ".json"]
+build_delay = 2000
+cmds = [
+  ["mage", "-v", "build:debug"],
+  ["mage", "-v" , "reloadPlugin"]
+]

grafana-plugin/package.json

@@ -11,6 +11,7 @@
     "build:dev": "NODE_ENV=development webpack -c ./webpack.config.ts --env development",
     "labels:link": "yarn --cwd ../../gops-labels/frontend link && yarn link \"@grafana/labels\" && yarn --cwd ../../gops-labels/frontend watch",
     "labels:unlink": "yarn --cwd ../../gops-labels/frontend unlink",
+    "mage:watch": "go mod download && mage -v buildAll",
     "test-utc": "TZ=UTC jest --verbose --testNamePattern '^((?!@london-tz).)*$'",
     "test-london-tz": "TZ=Europe/London jest --verbose --testNamePattern '@london-tz'",
     "test": "PLUGIN_ID=grafana-oncall-app yarn test-utc && yarn test-london-tz",