Add html-generator-detect (#3608)

* Add html-generator-detect

* Update html-generator-detect.yaml

* Update html-generator-detect.yaml

* minor updates

Co-authored-by: Prince Chaddha <prince@projectdiscovery.io>
Co-authored-by: sandeep <sandeep@projectdiscovery.io>

technologies/metatag-cms.yaml

@@ -0,0 +1,35 @@
+id: metatag-cms
+
+info:
+  name: Metatag CMS Detection
+  author: dadevel
+  severity: info
+  description: Generic CMS Detection using html meta generator tag
+  reference: https://www.w3schools.com/tags/att_meta_name.asp
+  tags: tech,cms
+
+requests:
+  - method: GET
+    path:
+      - "{{BaseURL}}"
+
+    redirects: true
+    max-redirects: 2
+    matchers-condition: and
+    matchers:
+      - type: word
+        part: header
+        words:
+          - 'text/html'
+
+      - type: regex
+        part: body
+        regex:
+          - '(?i)<meta\s+?name="?generator"?\s+?content="[^"]+?"'
+
+    extractors:
+      - type: regex
+        part: body
+        group: 1
+        regex:
+          - '(?i)<meta\s+?name="?generator"?\s+?content="([^"]+?)"'