Add specialized version of sim1 for static models.

Also add an integration test and fix homotopy error message.
13 jobs for master in 109 minutes and 37 seconds (queued for 10 seconds)
Status Job ID Name Coverage
  Build
passed #29586
build_binaries

00:06:15

passed #29587
build_doc

00:01:21

 
  Test
passed #29591
test_dynare++

00:14:21

passed #29588
test_matlab

01:07:54

manual #29590
allowed to fail manual
test_octave
manual #29589
allowed to fail manual
test_old_matlab
 
  Pkg
passed #29610
macOS
pkg_macOS

00:21:47

passed #29592
pkg_source

00:01:48

passed #29611
pkg_windows

00:16:03

failed #29594
macOS
pkg_macOS

00:36:36

failed #29593
pkg_windows

00:48:59

 
  Deploy
passed #29595
restricted
deploy_manual_unstable

00:00:08

passed #29596
restricted
deploy_snapshot_unstable

00:00:39