Add resource usage timeline diagrams to README

- Added Mermaid XY charts showing memory usage over time
- Individual charts for Elixir, TypeScript, Dart, Haskell, C
- Comparison chart for fast languages
- Shows how memory usage varies during program execution
- Based on actual timeline data from benchmark runs

timelines/Java/run_1.tsv

@@ -0,0 +1,5 @@
+9   1984 0
+33   2032 0
+56   2032 0
+80   2032 0
+107   2032 0

timelines/Java/run_2.tsv

@@ -0,0 +1,2 @@
+8   2032 0
+30   2032 0

timelines/Java/run_3.tsv

@@ -0,0 +1,2 @@
+9   2016 0
+36   2016 0

timelines/Java/run_4.tsv

@@ -0,0 +1,2 @@
+9   2016 0
+35   2016 0