Feat UI byod landing page

[ghernandez345]

For #26211

Add Android to byod enrollment landing page. this includes:

new android section in add hosts modal:

messaging when visiting from non android, ios, ipad device:

enroll into android mdm UI:

various error states (secret is invalid, android or mac os mdm not enabled):

• Changes file added for user-visible changes in changes/, orbit/changes/ or ee/fleetd-chrome/changes.
• Manual QA for all new/changed functionality

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.85%. Comparing base (b990b3c) to head (f0ac6c6).
Report is 31 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #26592   +/-   ##
=======================================
  Coverage   63.84%   63.85%           
=======================================
  Files        1662     1664    +2     
  Lines      159333   159371   +38     
  Branches     4109     4128   +19     
=======================================
+ Hits       101726   101764   +38     
  Misses      49657    49657           
  Partials     7950     7950           

Flag	Coverage Δ
frontend	54.00% <100.00%> (+0.13%)	⬆️

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