Add support for musllinux_1_2 (#861)

# Description
Add support for building wheels for musllinux_1_2.
Note that wheelse for python3.12 cannot be built on musllinux. 

Builds on top of PR #860.

## Type of change
- [ ] Bug fix & code cleanup
- [x] New feature
- [ ] Documentation update
- [ ] Test update

## Checklist for the reviewer
This checklist should be used as a help for the reviewer.

- [ ] Is the change limited to one issue?
- [ ] Does this PR close the issue?
- [ ] Is the code easy to read and understand?
- [ ] Do all new feature have an accompanying new test?
- [ ] Has the documentation been updated as necessary?

.github/workflows/ci_build_wheels.yml

@@ -26,15 +26,18 @@ jobs:
             system_type: ["manylinux", "2014"]
             arch: i686
             py_minors: 8,12
+            # Python 3.12 fails since cibuildwheel still depends on distutils
+            # for musllinux
           - os: ubuntu-20.04
             system_type: ["musllinux", "_1_1"]
             arch: i686
-            py_minors: 8,11  # Python 3.12 fails
-          # Fails with cannot import distutils
-          #- os: ubuntu-20.04
-          #  system_type: ["musllinux", "_1_2"]
-          #  arch: i686
-          #  py_minors: 10,11
+            py_minors: 8,11
+            # Python 3.12 fails since cibuildwheel still depends on distutils
+            # for musllinux
+          - os: ubuntu-20.04
+            system_type: ["musllinux", "_1_2"]
+            arch: i686
+            py_minors: 8,11
 
           # 64-bit linux
           - os: ubuntu-20.04
@@ -49,38 +52,18 @@ jobs:
             system_type: ["manylinux", "_2_28"]
             arch: x86_64
             py_minors: 8,12
-          # See issue #225: https://github.com/SINTEF/dlite/issues/225
-          # - os: ubuntu-20.04
-          #   system_type: ["musllinux", "_1_1"]
-          #   arch: x86_64
-          #   py_minors: 8,10
+            # Python 3.12 fails since cibuildwheel still depends on distutils
+            # for musllinux
           - os: ubuntu-20.04
             system_type: ["musllinux", "_1_1"]
             arch: x86_64
-            py_minors: 8,11  # Fails for Python-3.12
-          # Fails with cannot import distutils
-          #- os: ubuntu-20.04
-          #  system_type: ["musllinux", "_1_2"]
-          #  arch: x86_64
-          #  py_minors: 8,12
-
-          # May work after weekly container build...
-          #- os: ubuntu-20.04
-          #  system_type: ["musllinux", "_1_2"]
-          #  arch: x86_64
-          #  py_minors: 8
-          #- os: ubuntu-20.04
-          #  system_type: ["musllinux", "_1_2"]
-          #  arch: x86_64
-          #  py_minors: 10
-          #- os: ubuntu-20.04
-          #  system_type: ["musllinux", "_1_2"]
-          #  arch: x86_64
-          #  py_minors: 11
-          #- os: ubuntu-20.04
-          #  system_type: ["musllinux", "_1_2"]
-          #  arch: x86_64
-          #  py_minors: 12
+            py_minors: 8,11
+            # Python 3.12 fails since cibuildwheel still depends on distutils
+            # for musllinux
+          - os: ubuntu-20.04
+            system_type: ["musllinux", "_1_2"]
+            arch: x86_64
+            py_minors: 8,11
 
           # See issue #220: https://github.com/SINTEF/dlite/issues/220
           # # 32-bit Windows

doc/getting_started/installation.md

@@ -38,7 +38,7 @@ wheels are shown in the following two tables.
 | Python version   | 3.8 | 3.9 | 3.10 | 3.11 | 3.12 |
 | ---------------- | --- | --- | ---- | ---- | ---- |
 | [musllinux_1_1]  |  x  |  x  |  x   |  x   |      |
-| [musllinux_1_2]  |     |     |      |      |      |
+| [musllinux_1_2]  |  x  |  x  |  x   |  x   |      |
 | [manylinux2010]  |  x  |  x  |      |      |      |
 | [manylinux2014]  |  x  |  x  |  x   |  x   |  x   |
 | [manylinux_2_28] |     |     |      |      |      |
@@ -49,7 +49,7 @@ wheels are shown in the following two tables.
 | Python version   | 3.8 | 3.9 | 3.10 | 3.11 | 3.12 |
 | ---------------- | --- | --- | ---- | ---- | ---- |
 | [musllinux_1_1]  |  x  |  x  |  x   |  x   |      |
-| [musllinux_1_2]  |     |     |      |      |      |
+| [musllinux_1_2]  |  x  |  x  |  x   |  x   |      |
 | [manylinux2010]  |  x  |  x  |      |      |      |
 | [manylinux2014]  |  x  |  x  |  x   |  x   |  x   |
 | [manylinux_2_28] |  x  |  x  |  x   |  x   |  x   |