RFR: 7366: Object contributions [v2]

[Joshua Matsuoka]

> This PR addresses JMC-7366, adding Object Contributions for method types in JMC. This allows users to right click on a method in the UI and create an agent plugin probe template for that method, simplifying the user experience a bit.

Joshua Matsuoka has updated the pull request incrementally with one additional commit since the last revision:

  Copyright header fix

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Changes:
  - all: https://git.openjdk.java.net/jmc/pull/288/files
  - new: https://git.openjdk.java.net/jmc/pull/288/files/d89a9123..0c9b0455

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jmc&pr=288&range=01
 - incr: https://webrevs.openjdk.java.net/?repo=jmc&pr=288&range=00-01

  Stats: 6 lines in 3 files changed: 0 ins; 0 del; 6 mod
  Patch: https://git.openjdk.java.net/jmc/pull/288.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/288/head:pull/288

PR: https://git.openjdk.java.net/jmc/pull/288