feat: Add basic infrastructure for SQLite

db/sqlite/migrations/metadata/1636892915.sql

@@ -0,0 +1,61 @@
+-- +migrate Up
+create table headers (
+	-- Typeflag is the type of header entry.
+	-- The zero value is automatically promoted to either TypeReg or TypeDir
+	-- depending on the presence of a trailing slash in Name.
+	typeflag integer not null,
+	-- Name of file entry
+	name text not null primary key,
+	-- Target name of link (valid for TypeLink or TypeSymlink)
+	linkname text not null,
+	-- Logical file size in bytes
+	size integer not null,
+	-- Permission and mode bits
+	mode integer not null,
+	-- User ID of owner
+	uid integer not null,
+	-- Group ID of owner
+	gid integer not null,
+	-- User name of owner
+	uname text not null,
+	-- Group name of owner
+	gname text not null,
+	-- If the Format is unspecified, then Writer.WriteHeader rounds ModTime
+	-- to the nearest second and ignores the AccessTime and ChangeTime fields.
+	--
+	-- To use AccessTime or ChangeTime, specify the Format as PAX or GNU.
+	-- To use sub-second resolution, specify the Format as PAX.
+	-- Modification time
+	modtime date not null,
+	-- Access time (requires either PAX or GNU support)
+	accesstime date not null,
+	-- Change time (requires either PAX or GNU support)
+	changetime date not null,
+	-- Major device number (valid for TypeChar or TypeBlock)
+	devmajor integer not null,
+	-- Minor device number (valid for TypeChar or TypeBlock)
+	devminor integer not null,
+	-- PAXRecords is a map of PAX extended header records.
+	--
+	-- User-defined records should have keys of the following form:
+	--	VENDOR.keyword
+	-- Where VENDOR is some namespace in all uppercase, and keyword may
+	-- not contain the '=' character (e.g., "GOLANG.pkg.version").
+	-- The key and value should be non-empty UTF-8 strings.
+	--
+	-- When Writer.WriteHeader is called, PAX records derived from the
+	-- other fields in Header take precedence over PAXRecords.
+	paxrecords text not null,
+	-- Format specifies the format of the tar header.
+	--
+	-- This is set by Reader.Next as a best-effort guess at the format.
+	-- Since the Reader liberally reads some non-compliant files,
+	-- it is possible for this to be FormatUnknown.
+	--
+	-- If the format is unspecified when Writer.WriteHeader is called,
+	-- then it uses the first format (in the order of USTAR, PAX, GNU)
+	-- capable of encoding this Header (see Format).
+	format text not null
+);
+-- +migrate Down
+drop table headers;