[chore] use our own logging implementation (#716)

* first commit

Signed-off-by: kim <grufwub@gmail.com>

* replace logging with our own log library

Signed-off-by: kim <grufwub@gmail.com>

* fix imports

Signed-off-by: kim <grufwub@gmail.com>

* fix log imports

Signed-off-by: kim <grufwub@gmail.com>

* add license text

Signed-off-by: kim <grufwub@gmail.com>

* fix package import cycle between config and log package

Signed-off-by: kim <grufwub@gmail.com>

* fix empty kv.Fields{} being passed to WithFields()

Signed-off-by: kim <grufwub@gmail.com>

* fix uses of log.WithFields() with whitespace issues and empty slices

Signed-off-by: kim <grufwub@gmail.com>

* *linter related grumbling*

Signed-off-by: kim <grufwub@gmail.com>

* gofmt the codebase! also fix more log.WithFields() formatting issues

Signed-off-by: kim <grufwub@gmail.com>

* update testrig code to match new changes

Signed-off-by: kim <grufwub@gmail.com>

* fix error wrapping in non fmt.Errorf function

Signed-off-by: kim <grufwub@gmail.com>

* add benchmarking of log.Caller() vs non-cached

Signed-off-by: kim <grufwub@gmail.com>

* fix syslog tests, add standard build tags to test runner to ensure consistency

Signed-off-by: kim <grufwub@gmail.com>

* make syslog tests more robust

Signed-off-by: kim <grufwub@gmail.com>

* fix caller depth arithmatic (is that how you spell it?)

Signed-off-by: kim <grufwub@gmail.com>

* update to use unkeyed fields in kv.Field{} instances

Signed-off-by: kim <grufwub@gmail.com>

* update go-kv library

Signed-off-by: kim <grufwub@gmail.com>

* update libraries list

Signed-off-by: kim <grufwub@gmail.com>

* fuck you linter get nerfed

Signed-off-by: kim <grufwub@gmail.com>

Co-authored-by: tobi <31960611+tsmethurst@users.noreply.github.com>

vendor/codeberg.org/gruf/go-kv/field_fmt.go

@@ -0,0 +1,36 @@
+//go:build !kvformat
+// +build !kvformat
+
+package kv
+
+import (
+	"fmt"
+
+	"codeberg.org/gruf/go-byteutil"
+)
+
+// AppendFormat will append formatted format of Field to 'buf'. See .String() for details.
+func (f Field) AppendFormat(buf *byteutil.Buffer, vbose bool) {
+	var fmtstr string
+	if vbose /* verbose */ {
+		fmtstr = `%#v`
+	} else /* regular */ {
+		fmtstr = `%+v`
+	}
+	appendQuoteKey(buf, f.K)
+	buf.WriteByte('=')
+	appendQuoteValue(buf, fmt.Sprintf(fmtstr, f.V))
+}
+
+// Value returns the formatted value string of this Field.
+func (f Field) Value(vbose bool) string {
+	var fmtstr string
+	if vbose /* verbose */ {
+		fmtstr = `%#v`
+	} else /* regular */ {
+		fmtstr = `%+v`
+	}
+	buf := byteutil.Buffer{B: make([]byte, 0, bufsize/2)}
+	appendQuoteValue(&buf, fmt.Sprintf(fmtstr, f.V))
+	return buf.String()
+}