feat(cache): redis cache (#8822)

# Which Problems Are Solved

Add a cache implementation using Redis single mode. This does not add
support for Redis Cluster or sentinel.

# How the Problems Are Solved

Added the `internal/cache/redis` package. All operations occur
atomically, including setting of secondary indexes, using LUA scripts
where needed.

The [`miniredis`](https://github.com/alicebob/miniredis) package is used
to run unit tests.

# Additional Changes

- Move connector code to `internal/cache/connector/...` and remove
duplicate code from `query` and `command` packages.
- Fix a missed invalidation on the restrictions projection

# Additional Context

Closes #8130

internal/cache/connector/pg/connector.go

@@ -0,0 +1,28 @@
+package pg
+
+import (
+	"github.com/zitadel/zitadel/internal/cache"
+	"github.com/zitadel/zitadel/internal/database"
+)
+
+type Config struct {
+	Enabled   bool
+	AutoPrune cache.AutoPruneConfig
+}
+
+type Connector struct {
+	PGXPool
+	Dialect string
+	Config  Config
+}
+
+func NewConnector(config Config, client *database.DB) *Connector {
+	if !config.Enabled {
+		return nil
+	}
+	return &Connector{
+		PGXPool: client.Pool,
+		Dialect: client.Type(),
+		Config:  config,
+	}
+}