Add April (101st) technical notes (#320)

* Add April (101st) notes

* 🚨 fix linting issues

* Apply suggestions from code review

Co-authored-by: Chris de Almeida <ctcpip@users.noreply.github.com>
Co-authored-by: jmdyck <jmdyck@ibiblio.org>

* Apply suggestions from code review

Co-authored-by: jmdyck <jmdyck@ibiblio.org>

---------

Co-authored-by: ctcpip <ctcpip@users.noreply.github.com>
Co-authored-by: jmdyck <jmdyck@ibiblio.org>

Author: 3 people

meetings/2024-04/README.md

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+# 101st meeting of Ecma TC39 Summary
+
+## Proposals
+
+| Advanced to     | Proposal                                      |
+|-----------------|-----------------------------------------------|
+| Stage 4         | Set methods                                   |
+| Stage 4         | duplicate named capture groups                |
+| Stage 3         | new Function                                  |
+| Stage 3 | Make eval-introduced global vars redeclarable |
+| Stage 2.7       | Promise.try                                   |
+| Stage 2.7       | Math.sumPrecise                               |
+| Stage 1         | Error.isError                                 |
+| Stage 1         | Strict Enforcement of 'using'                 |
+| Stage 1         | Signals                                       |
+| Withdrawn       | Array.last                                    |
+
+## Task groups
+
+* KKL has joined the conveners group for TG3; meeting cadence doubled to weekly
+* TG4 has consolidated their code into one repo & is seeking input on organization (especially re tests)
+* TG4 will be meeting in person in Munich June 24-25
+
+## Other
+
+* Committee reached consensus on _non-binding_ guidelines regarding coercion (and not doing it)