[CI] Add PR labeler (openvinotoolkit#994)

* add PR labeler

* add token

* add labeler based on changed files

* correct paths

* better names

* add fix and dependencies labels

.github/labeler_files.yml

@@ -0,0 +1,18 @@
+labeler-strategy: append  # only add new labels, never remove already assigned
+
+new notebook:
+  - files: 
+      added: notebooks/**/*.ipynb
+enhancement:
+  - files:
+      modified: notebooks/**/*
+      added: notebooks/**/*
+documentation:
+  - files:
+      modified: "**/*.md"
+      added: "**/*.md"
+dependencies:
+  - files:
+      added: "**/*requirements*"
+      modified: "**/*requirements*"
+      modified: "**/Pipfile*"

.github/labeler_regexp.yml

@@ -0,0 +1,4 @@
+gsoc:
+    - '/gsoc|summer/i'
+fix:
+    - '/bug|not working|fail|fails|error|issue/i'

.github/workflows/labeler.yml

@@ -0,0 +1,24 @@
+name: "PR Labeler"
+on:
+  pull_request:
+    types: [opened, edited]
+
+jobs:
+  labelling:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Add labels (Title/Description)
+      uses: github/[email protected]
+      with:
+        repo-token: "${{ secrets.GITHUB_TOKEN }}"
+        configuration-path: ".github/labeler_regexp.yml"
+        not-before: 2023-03-30T00:00:00Z
+        enable-versioned-regex: 0
+        include-title: 1
+        sync-labels: 1
+    - name: Add labels (Changed Files)
+      uses: doka-guide/[email protected]
+      with:
+          token: "${{ secrets.GITHUB_TOKEN }}"
+          config: ".github/labeler_files.yml"