move jfr-pprof conversion code from pyroscope repo to jfr-parser module

go.work

@@ -0,0 +1,6 @@
+go 1.21
+
+use (
+.
+./pprof
+)

go.work.sum

@@ -0,0 +1,40 @@
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pprof/go.mod

@@ -0,0 +1,16 @@
+module github.com/grafana/jfr-parser/pprof
+
+go 1.18
+
+require (
+	github.com/grafana/jfr-parser v0.7.2-0.20230831140626-08fa3a941bf8
+	github.com/grafana/pyroscope/api v0.3.0
+	github.com/stretchr/testify v1.8.4
+	google.golang.org/protobuf v1.32.0
+)
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

pprof/go.sum

@@ -0,0 +1,18 @@
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+github.com/grafana/jfr-parser v0.7.2-0.20230831140626-08fa3a941bf8/go.mod h1:M5u1ux34Qo47ZBWksbMYVk40s7dvU3WMVYpxweEu4R0=
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pprof/jfr_labels.proto

@@ -0,0 +1,12 @@
+syntax = "proto3";
+
+//package io.pyroscope.labels.pb;
+option go_package = "github.com/grafana/pyroscope/pkg/og/convert/jfr";
+
+message Context {
+  map<int64, int64> labels = 1;
+}
+message LabelsSnapshot {
+  map<int64, Context> contexts = 1;
+  map<int64, string> strings = 2;
+}