Add nightly builds (#1013)

Partially fixes #884.
Adds:
- Docker image for CI on Linux
- Nightly builds without cache and releases
- Nightly clang-tidy checks
- Fix typos in .clang-tidy

.github/workflows/nightly_notes.md

@@ -0,0 +1,12 @@
+```
+Based on commit: $GITHUB_SHA
+```
+
+> **Note:** Please remember that this is a development release and it is not recommended for production use.
+
+Changelog (including previous releases): https://github.com/kuznetsss/clio/commits/nightly
+
+## SHA256 checksums
+```
+$(CLIO_SHA256_SUMS)
+```