[CI] Add trigger on workflow_dispatch event for pages deployment and CodeQL jobs, add CodeQL badge to README (#260)

Author: aobolensk

.github/workflows/codeql.yml

@@ -3,6 +3,7 @@ name: "CodeQL"
 on:
   schedule:
     - cron: '0 0 * * *'
+  workflow_dispatch:
 
 jobs:
   analyze:

.github/workflows/pages.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - master
+  workflow_dispatch:
 
 permissions:
   id-token: write

README.md

@@ -1,5 +1,6 @@
 [![Build application](https://github.com/learning-process/parallel_programming_course/actions/workflows/main.yml/badge.svg?branch=master)](https://github.com/learning-process/parallel_programming_course/actions/workflows/main.yml)
 [![Pages](https://github.com/learning-process/parallel_programming_course/actions/workflows/pages.yml/badge.svg?branch=master)](https://github.com/learning-process/parallel_programming_course/actions/workflows/pages.yml)
+[![CodeQL](https://github.com/learning-process/parallel_programming_course/actions/workflows/codeql.yml/badge.svg?branch=master)](https://github.com/learning-process/parallel_programming_course/actions/workflows/codeql.yml)
 [![codecov](https://codecov.io/gh/learning-process/parallel_programming_course/graph/badge.svg?token=qCOtqeFyIz)](https://codecov.io/gh/learning-process/parallel_programming_course)
 
 # Parallel Programming Course