All the functions of PostgresContext should be organized in appropriate packages and use pointer receivers

[github-actions]

pocket/persistence/context.go

Lines 17 to 22 in d552ec6

	// TECHDEBT: All the functions of `PostgresContext` should be organized in appropriate packages and use pointer receivers
	type PostgresContext struct {
	Height int64 // TECHDEBT: `Height` is only externalized for testing purposes. Replace with a `Debug` interface containing helpers
	conn *pgx.Conn
	tx pgx.Tx

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This issue was generated by todo-issue based on a TECHDEBT comment in d552ec6.