doc: Add back new theme and remove old doc workflow

Add back new theme and remove old doc workflow
for go live.
DNM the PR.

Signed-off-by: divya pillai <divya.pillai@nordicsemi.no>

Author: divipillai

.github/workflows/docs-build-and-publish-zooomin.yml

@@ -26,6 +26,11 @@
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
 
 html_theme = 'sphinx_ncs_theme'
+html_show_sphinx = False
+html_static_path = ["_static"]
+html_css_files = ["hide-versions.css"]
+
+html_theme_options = {'docsets': {},"addons_url": "https://nrfconnect.github.io/ncs-app-index/","bare_metal_url": "","ncs_url": "https://nrfconnectdocs.nordicsemi.com/ncs/latest/nrf/index.html", "ncs_label": "nRF Connect SDK Docs", "logo_url": "https://nordic-semiconductor.fluidtopics.net/"}
 
 # Include following files at the end of each .rst file.
 rst_epilog = """

.github/workflows/docs-build-and-publish.yml

@@ -1,6 +1,6 @@
 Sphinx==5.3.0
 breathe==4.35.0
-sphinx-ncs-theme==0.7.4
+sphinx-ncs-theme<2.1
 sphinx-tabs>=3.4
 sphinx-togglebutton>=0.3.2
 Pillow>=9.0.1