RFR: 6690: Find a home for the Flame View in the JMC perspective

[Marcus Hirt]

Adding another plug-in to the default perspective can cause the JVM browser to be loaded _after_ the Flight Recorder UI, making views end up in the wrong place. To avoid this, I added a dependency on the JVM Browser bundle. This is sad, since it was previously easy to, for example, build a JFR-only-file viewer, without even including the JVM browser, JMX Console etc, by simply editing the features. A better long term solution would probably be to include the flame graph in the JFR UI bundle. I suggest using this approach for 8.0.0 for now.

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Commit messages:
 - 6690: Find a home for the Flame View in the JMC perspective

Changes: https://git.openjdk.java.net/jmc/pull/167/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=167&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-6690
  Stats: 15 lines in 2 files changed: 9 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jmc/pull/167.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/167/head:pull/167

PR: https://git.openjdk.java.net/jmc/pull/167