RFR: 8332098: Add missing `@since` tags to `jdk.jdi`

[Nizar Benalla]

Please review this simple change where I add `@since` tags to the package-info file of the following packages
```com.sun.jdi
com.sun.jdi.connect
com.sun.jdi.connect.spi
com.sun.jdi.event
com.sun.jdi.request

I used the unix `grep` command to find the oldest `@since` in each package and used that value, as it's hard to get the source code of JDK 1-5
TIA

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Commit messages:
 - Add `@since` tags to package-info.java

Changes: https://git.openjdk.org/jdk/pull/19200/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19200&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8332098
  Stats: 15 lines in 5 files changed: 10 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk/pull/19200.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19200/head:pull/19200

PR: https://git.openjdk.org/jdk/pull/19200