[gh-action]: Generate a weekly report of activity (open-telemetry#26111)

**Description:** 

This PR creates a gh action that generates a weekly report on repo
statistics.
It delivers on the requirements specified in
open-telemetry#24672
You can see the sample output here:
kevinslin#16

**Link to tracking Issue:** open-telemetry#24672

**Testing:** 

Manual testing in fork:
https://github.com/kevinslin/opentelemetry-collector-contrib/actions
Example output:
kevinslin#17

**Documentation:** 


The architecture:
- we use `actions/github-script@v6` to make calls to the gh apis
- we require installing `js-yaml` in order to parse `metadata.yaml`
files in order to get components. this dependency is installed during
the github action run and not persisted

Some caveats about the logic:
- when this action runs, it looks back the previous 7 days and gets
issues created in that time period, normalizing times to UTC
- eg. if running this on wednesday (eg. 2023-08-25 17:35:00), it will
scan issues from the previous wednesday (2023-08-18 00:00:00Z) to
beginning of this wednesday (2023-08-28 0:00:00Z)
- this action writes the json payload of the report inside the issue.
the payload is parsed by future reports to calculate deltas
- the report issue has a custom label: `report` - this is used so we can
properly filter previous issues when calculating deltas. the [github
issues
api](https://docs.github.com/en/rest/issues/issues?apiVersion=2022-11-28#list-repository-issues)
only does filtering based on labels and `since` date

This action currently runs every Tuesday at 1AM UTC

---------

Co-authored-by: Antoine Toulme <antoine@toulme.name>
Co-authored-by: Tyler Helmuth <12352919+TylerHelmuth@users.noreply.github.com>

.github/workflows/generate-weekly-report.yml

@@ -0,0 +1,24 @@
+# This action generates a weekly report as a github issue
+# More details in https://github.com/open-telemetry/opentelemetry-collector-contrib/issues/24672
+
+name: 'Generate Weekly Report'
+on:
+  workflow_dispatch: 
+  schedule:
+    # run every tuesday at 1am UTC
+    - cron: "0 1 * * 2"
+
+jobs:
+  get_issues:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - run: npm install js-yaml
+        working-directory: ./.github/workflows/scripts
+      - uses: actions/github-script@v6
+        id: get-issues
+        with:
+          retries: 3
+          script: |
+            const script = require('.github/workflows/scripts/generate-weekly-report.js')
+            await script({github, context})