[#488] reputation/managers: Implement route builders

Add implementation of Builder interface for
intermediate trusts. Move all code associated
with managers to `common` directory in `cmd`
and `pkg/services/reputation`

Signed-off-by: Pavel Karpy <carpawell@nspcc.ru>

pkg/services/reputation/local/managers/builder.go

@@ -1,48 +0,0 @@
-package managers
-
-import "fmt"
-
-// Prm groups the required parameters of the Builder's constructor.
-//
-// All values must comply with the requirements imposed on them.
-// Passing incorrect parameter values will result in constructor
-// failure (error or panic depending on the implementation).
-type Prm struct {
-	// Manager builder for current node.
-	//
-	// Must not be nil.
-	ManagerBuilder ManagerBuilder
-}
-
-// Builder represents component that routes node to its managers.
-//
-// For correct operation, Builder must be created using
-// the constructor (New) based on the required parameters
-// and optional components. After successful creation,
-// the Builder is immediately ready to work through API.
-type Builder struct {
-	managerBuilder ManagerBuilder
-}
-
-const invalidPrmValFmt = "invalid parameter %s (%T):%v"
-
-func panicOnPrmValue(n string, v interface{}) {
-	panic(fmt.Sprintf(invalidPrmValFmt, n, v, v))
-}
-
-// New creates a new instance of the Builder.
-//
-// Panics if at least one value of the parameters is invalid.
-//
-// The created Builder does not require additional
-// initialization and is completely ready for work.
-func New(prm Prm) *Builder {
-	switch {
-	case prm.ManagerBuilder == nil:
-		panicOnPrmValue("ManagerBuilder", prm.ManagerBuilder)
-	}
-
-	return &Builder{
-		managerBuilder: prm.ManagerBuilder,
-	}
-}