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/Lua/run_1.tsv

@@ -0,0 +1,4 @@
+12   2080 0
+39   2080 0
+62   2080 0
+81 0 0

timelines/Lua/run_2.tsv

@@ -0,0 +1,4 @@
+9   2048 0
+31   2048 0
+57   2048 0
+80   2048 

timelines/Lua/run_3.tsv

@@ -0,0 +1,4 @@
+8   2048 0
+32   2048 0
+54   2048 0
+76   2048 

timelines/Lua/run_4.tsv

@@ -0,0 +1,4 @@
+8   2048 0
+28   2048 0
+50   2048 0
+71   2048 0