chore(docs): use RTD (#365)

* chore(docs): use RTD

* chore(ci): remove pages deployment

Author: jeertmans

.bumpversion.cfg

@@ -1,7 +1,7 @@
 [bumpversion]
 current_version = 5.1.0
 parse = (?P<major>\d+)\.(?P<minor>\d+)\.(?P<patch>\d+)(-rc(?P<release>\d+))?
-serialize = 
+serialize =
 	{major}.{minor}.{patch}-rc{release}
 	{major}.{minor}.{patch}
 commit = True

.github/workflows/pages.yml

@@ -0,0 +1,21 @@
+version: 2
+build:
+  os: ubuntu-22.04
+  tools:
+    python: '3.10'
+  apt_packages:
+  - libpango1.0-dev
+  - ffmpeg
+  jobs:
+    post_install:
+    - ipython kernel install --name "manim-slides" --user
+sphinx:
+  configuration: docs/source/conf.py
+python:
+  install:
+  - method: pip
+    path: .
+    extra_requirements:
+    - docs
+    - magic
+    - sphinx-directive