libs/common: Refactor libs/common 5 (#4240)

* libs/common: Refactor libs/common 5

- move mathematical functions and types out of `libs/common` to math pkg
- move net functions out of `libs/common` to net pkg
- move string functions out of `libs/common` to strings pkg
- move async functions out of `libs/common` to async pkg
- move bit functions out of `libs/common` to bits pkg
- move cmap functions out of `libs/common` to cmap pkg
- move os functions out of `libs/common` to os pkg

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* fix testing issues

* fix tests

closes #41417

woooooooooooooooooo kill the cmn pkg

Signed-off-by: Marko Baricevic <marbar3778@yahoo.com>

* add changelog entry

* fix goimport issues

* run gofmt

libs/math/fraction.go

@@ -0,0 +1,17 @@
+package math
+
+import "fmt"
+
+// Fraction defined in terms of a numerator divided by a denominator in int64
+// format.
+type Fraction struct {
+	// The portion of the denominator in the faction, e.g. 2 in 2/3.
+	Numerator int64
+	// The value by which the numerator is divided, e.g. 3 in 2/3. Must be
+	// positive.
+	Denominator int64
+}
+
+func (fr Fraction) String() string {
+	return fmt.Sprintf("%d/%d", fr.Numerator, fr.Denominator)
+}

libs/math/math.go

@@ -0,0 +1,31 @@
+package math
+
+func MaxInt64(a, b int64) int64 {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func MaxInt(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+//-----------------------------------------------------------------------------
+
+func MinInt64(a, b int64) int64 {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+func MinInt(a, b int) int {
+	if a < b {
+		return a
+	}
+	return b
+}