[build] Overhaul Linux builds and refactor release workflow (#13997)

- Use `manylinux-shared` images for Linux builds
- Discontinue `yt-dlp_linux_armv7l`/`linux_armv7l_exe` release binary
- Add `yt-dlp_linux_armv7l.zip`/`linux_armv7l_dir` release binary
- Add `yt-dlp_musllinux` and `yt-dlp_musllinux_aarch64` release binaries
- Migrate `linux_exe` build strategy from staticx+musl to manylinux2014/glibc2.17
- Rewrite release.yml's "unholy bash monstrosity" as devscripts/setup_variables.py

Closes #10072, Closes #10630, Closes #10578, Closes #13976, Closes #13977, Closes #14106
Authored by: bashonly

devscripts/update-version.py

@@ -9,24 +9,9 @@ sys.path.insert(0, os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
 
 import argparse
 import contextlib
-import datetime as dt
 import sys
 
-from devscripts.utils import read_version, run_process, write_file
-
-
-def get_new_version(version, revision):
-    if not version:
-        version = dt.datetime.now(dt.timezone.utc).strftime('%Y.%m.%d')
-
-    if revision:
-        assert revision.isdecimal(), 'Revision must be a number'
-    else:
-        old_version = read_version().split('.')
-        if version.split('.') == old_version[:3]:
-            revision = str(int(([*old_version, 0])[3]) + 1)
-
-    return f'{version}.{revision}' if revision else version
+from devscripts.utils import calculate_version, run_process, write_file
 
 
 def get_git_head():
@@ -72,9 +57,7 @@ if __name__ == '__main__':
     args = parser.parse_args()
 
     git_head = get_git_head()
-    version = (
-        args.version if args.version and '.' in args.version
-        else get_new_version(None, args.version))
+    version = calculate_version(args.version)
     write_file(args.output, VERSION_TEMPLATE.format(
         version=version, git_head=git_head, channel=args.channel, origin=args.origin,
         package_version=f'{version}{args.suffix}'))