v0.7.0 Alpha Release

Do not use this in a production environment!

Refactor codebase for the latest go version.

• PostgreSQL 17 Metrics Support by @Vonng
• pg_exporter: predicate queries feature by @ringerc
• Do a clean build in the dockerfile by @ringerc by @ringerc
• pg_exporter: don't panic after "bind: address already in use" by @ringerc
• pg_exporter: fix /stat endpoint formatting by @ringerc
• pg_exporter: omit default query properties on yaml export by @ringerc
• Exclude template DBs from discovery and schema-qualify discovery query by @ringerc
• Fix some typos and some metric description mistakes by @ringerc
• Switch from unmaintained lib/pq driver to pgx with stdlib wrapper by @ringerc (Reverted)
• Increase Caller Skip Depth by One Layer by @ulysseskk

Alpha 1: https://github.com/Vonng/pg_exporter/releases/tag/v0.7.0-a1

MD5 (pg-exporter_0.7.0_amd64.deb) = b53c45b17aadbb0e56f5277a21ca5854
MD5 (pg-exporter_0.7.0_arm64.deb) = f9f02f10fa8c8c10638e98cddbddc2f5
MD5 (pg_exporter-0.7.0-1.aarch64.rpm) = 1994f486536ba4a45a8590671d665759
MD5 (pg_exporter-0.7.0-1.x86_64.rpm) = ab537b5882c0110a501c199df716df43
MD5 (pg_exporter-v0.7.0.darwin-amd64.tar.gz) = 6724c55d4365dbc1009c1235e449e918
MD5 (pg_exporter-v0.7.0.darwin-arm64.tar.gz) = 3b0eb8183d1e5a06b55f656dfe030dc7
MD5 (pg_exporter-v0.7.0.linux-amd64.tar.gz) = 8f17be7b5b535a65e2d23583e5d6f70a
MD5 (pg_exporter-v0.7.0.linux-arm64.tar.gz) = c5f01dd8d44b56198f970babd1c40bd8